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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Healer Space</title>
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<meta property="og:type" content="website">
<meta property="og:title" content="Healer Space">
<meta property="og:url" content="http://example.com/index.html">
<meta property="og:site_name" content="Healer Space">
<meta property="og:locale" content="zh_CN">
<meta property="article:author" content="wwy">
<meta name="twitter:card" content="summary">
<link rel="alternate" href="/atom.xml" title="Healer Space" type="application/atom+xml">
<link rel="shortcut icon" href="/favicon.png">
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/typeface-source-code-pro@0.0.71/index.min.css">
<link rel="stylesheet" href="/css/style.css">
<link rel="stylesheet" href="/fancybox/jquery.fancybox.min.css">
<meta name="generator" content="Hexo 6.3.0"></head>
<body>
<div id="container">
<div id="wrap">
<header id="header">
<div id="banner"></div>
<div id="header-outer" class="outer">
<div id="header-title" class="inner">
<h1 id="logo-wrap">
<a href="/" id="logo">Healer Space</a>
</h1>
</div>
<div id="header-inner" class="inner">
<nav id="main-nav">
<a id="main-nav-toggle" class="nav-icon"><span class="fa fa-bars"></span></a>
<a class="main-nav-link" href="/">Home</a>
<a class="main-nav-link" href="/archives">Archives</a>
</nav>
<nav id="sub-nav">
<a class="nav-icon" href="/atom.xml" title="RSS 订阅"><span class="fa fa-rss"></span></a>
<a class="nav-icon nav-search-btn" title="搜索"><span class="fa fa-search"></span></a>
</nav>
<div id="search-form-wrap">
<form action="//google.com/search" method="get" accept-charset="UTF-8" class="search-form"><input type="search" name="q" class="search-form-input" placeholder="搜索"><button type="submit" class="search-form-submit"></button><input type="hidden" name="sitesearch" value="http://example.com"></form>
</div>
</div>
</div>
</header>
<div class="outer">
<section id="main">
<article id="post-notes" class="h-entry article article-type-post" itemprop="blogPost" itemscope itemtype="https://schema.org/BlogPosting">
<div class="article-meta">
<a href="/2023/06/27/notes/" class="article-date">
<time class="dt-published" datetime="2023-06-27T06:04:00.000Z" itemprop="datePublished">2023-06-27</time>
</a>
</div>
<div class="article-inner">
<header class="article-header">
<h1 itemprop="name">
<a class="p-name article-title" href="/2023/06/27/notes/">笔记</a>
</h1>
</header>
<div class="e-content article-entry" itemprop="articleBody">
<h3 id="1-原生-去掉空格"><a href="#1-原生-去掉空格" class="headerlink" title="1-原生 去掉空格"></a>1-原生 去掉空格</h3><p>console.log(str.replace(/^\s*/g,’’),’去掉左边空格 ‘);<br>console.log(str.replace(/\s*$/g,’’),’去掉右边空格’);<br>console.log(str.replace(/^\s*|\s*$/g, ‘’),’去掉首尾空格’);<br>console.log(str1.replace(/\s*/g,””),’去掉所有空格(包含中间空格)’);</p>
<h3 id="2-时间戳和时间的转换"><a href="#2-时间戳和时间的转换" class="headerlink" title="2-时间戳和时间的转换"></a>2-时间戳和时间的转换</h3><p>let mydate = new Date(); //生成当前时间</p>
<p>let time = mydate.getFullYear() + “-“ + (mydate.getMonth()+1) + “-“ + mydate.getDate() + “ “ + “00:00:00”</p>
<p>let sev = mydate.getTime()； //转时间戳</p>
<p>最近n天计算</p>
<p>// let sev = new Date(mydate.getTime()-7<em>24</em>60<em>60</em>1000)</p>
<figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br></pre></td><td class="code"><pre><span class="line"><span class="title function_">changeTime</span>(<span class="params">t</span>) {</span><br><span class="line"> <span class="comment">// t:时间戳</span></span><br><span class="line"></span><br><span class="line"> <span class="keyword">var</span> date = <span class="keyword">new</span> <span class="title class_">Date</span>(t);</span><br><span class="line"> <span class="keyword">var</span> Y = date.<span class="title function_">getFullYear</span>() + <span class="string">'/'</span>;</span><br><span class="line"> <span class="comment">// var M = (date.getMonth()+1 < 10 ? '0'+(date.getMonth()+1) : date.getMonth()+1) + '/';</span></span><br><span class="line"> <span class="keyword">var</span> M = (date.<span class="title function_">getMonth</span>()+<span class="number">1</span>).<span class="title function_">toString</span>().<span class="title function_">padStart</span>(<span class="number">2</span>,<span class="number">0</span>) + <span class="string">'/'</span>;</span><br><span class="line"> <span class="keyword">var</span> D = date.<span class="title function_">getDate</span>().<span class="title function_">toString</span>().<span class="title function_">padStart</span>(<span class="number">2</span>,<span class="number">0</span>) + <span class="string">' '</span>;</span><br><span class="line"> <span class="keyword">var</span> h = date.<span class="title function_">getHours</span>().<span class="title function_">toString</span>().<span class="title function_">padStart</span>(<span class="number">2</span>,<span class="number">0</span>) + <span class="string">':'</span>;</span><br><span class="line"> <span class="keyword">var</span> m = date.<span class="title function_">getMinutes</span>().<span class="title function_">toString</span>().<span class="title function_">padStart</span>(<span class="number">2</span>,<span class="number">0</span>);</span><br><span class="line"> <span class="keyword">var</span> s = date.<span class="title function_">getSeconds</span>(); </span><br><span class="line"> <span class="keyword">return</span> Y+M+D+h+m</span><br><span class="line">},</span><br><span class="line"></span><br></pre></td></tr></table></figure>
<h3 id="3-js-改变样式"><a href="#3-js-改变样式" class="headerlink" title="3-js 改变样式"></a>3-js 改变样式</h3><p>div.style.cssText=’width:250px;height:250px;border:1px red solid;’;</p>
<h3 id="4-yarn-打包-vue-：（vite"><a href="#4-yarn-打包-vue-：（vite" class="headerlink" title="4-yarn 打包 vue ：（vite)"></a>4-yarn 打包 vue ：（vite)</h3><p>yarn build;</p>
<p>配置 vite.config.js</p>
<p>base属性，hash模式不用nginx history模式要整nginx</p>
<p>hash模式 base直接配置成 相对路径 base:”./“ 或者 base:”/asset/…” 找到直接的文件目录 （不能直接用绝对路径 “/”）</p>
<h3 id="5-npm-打包vue"><a href="#5-npm-打包vue" class="headerlink" title="5-npm 打包vue"></a>5-npm 打包vue</h3><p>npm run build</p>
<p>打包时 路由关闭 history 模式</p>
<h3 id="6-vue3-配置全局变量"><a href="#6-vue3-配置全局变量" class="headerlink" title="6-vue3 配置全局变量"></a>6-vue3 配置全局变量</h3><p>在main.js 文件</p>
<p>基本配置</p>
<p>import { createApp } from ‘vue’</p>
<p>import App from ‘./App.vue’</p>
<p>const app = createApp(App)</p>
<p>import router from ‘./router/router’</p>
<p><strong>import axios from ‘axios’；//axios 全局配置</strong></p>
<p><strong>app.config.globalProperties.$axios = axios</strong> </p>
<p>vue 组件使用：</p>
<p>import { getCurrentInstance } from ‘vue’;</p>
<p>const { proxy } =getCurrentInstance();</p>
<p>proxy.$axios.post()</p>
<h3 id="7-vue3-setup-发起请求"><a href="#7-vue3-setup-发起请求" class="headerlink" title="7-vue3 setup 发起请求"></a>7-vue3 setup 发起请求</h3><p>需要引入</p>
<p>import { getCurrentInstance } from ‘vue’;</p>
<p>const { proxy } =getCurrentInstance();</p>
<h3 id="8-获取地址栏参数"><a href="#8-获取地址栏参数" class="headerlink" title="8-获取地址栏参数"></a>8-获取地址栏参数</h3><figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">let</span> mylocation = <span class="variable language_">window</span>.<span class="property">location</span>.<span class="property">href</span></span><br><span class="line"><span class="comment">// 工具函数 getUrlParams 参数href值</span></span><br><span class="line"><span class="keyword">function</span> <span class="title function_">getUrlParams</span>(<span class="params">str</span>) {</span><br><span class="line"> <span class="keyword">let</span> arr = str.<span class="title function_">split</span>(<span class="string">"?"</span>)[<span class="number">1</span>].<span class="title function_">split</span>(<span class="string">"&"</span>);</span><br><span class="line"> <span class="keyword">let</span> obj = {}</span><br><span class="line"> <span class="keyword">for</span> (<span class="keyword">let</span> i = <span class="number">0</span>; i < arr.<span class="property">length</span>; i++) {</span><br><span class="line"> <span class="keyword">let</span> key = arr[i].<span class="title function_">split</span>(<span class="string">"="</span>)[<span class="number">0</span>]</span><br><span class="line"> <span class="keyword">let</span> value = arr[i].<span class="title function_">split</span>(<span class="string">"="</span>)[<span class="number">1</span>]</span><br><span class="line"> obj[key] = value</span><br><span class="line"> }</span><br><span class="line"> <span class="keyword">return</span> obj</span><br><span class="line">}</span><br><span class="line"><span class="keyword">let</span> paramsArr = <span class="title function_">getUrlParams</span>(mylocation)</span><br><span class="line"><span class="variable language_">console</span>.<span class="title function_">log</span>(paramsArr);</span><br></pre></td></tr></table></figure>
<h3 id="9-时间格式-Android和IOS的兼容问题"><a href="#9-时间格式-Android和IOS的兼容问题" class="headerlink" title="9-时间格式 Android和IOS的兼容问题"></a>9-时间格式 Android和IOS的兼容问题</h3><p>返回的时间格式数据 比如: 2022-06-02 15:56:07 在苹果设备上使用需要处理成 2022/06/02 15:56:07</p>
<p>苹果兼容问题 replace(/-/g,’/‘)</p>
<p>currentDate.value = new Date(new Date(res.data.data.endTime.replace(/-/g,’/‘)).getTime()+1000<em>60</em>60)</p>
<h3 id="10-echarts图注意事项"><a href="#10-echarts图注意事项" class="headerlink" title="10-echarts图注意事项"></a>10-echarts图注意事项</h3><p>全局缩放会(zoom)影响eacharts图表的箭头(点这指那)</p>
<h3 id="11-静态资源文件放在puclic"><a href="#11-静态资源文件放在puclic" class="headerlink" title="11-静态资源文件放在puclic"></a>11-静态资源文件放在puclic</h3><p>在index.html中引入 直接 /auto.js</p>
<h3 id="12-电话正则"><a href="#12-电话正则" class="headerlink" title="12-电话正则"></a>12-电话正则</h3><figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">//1.</span></span><br><span class="line"><span class="keyword">let</span> reg_tel = <span class="regexp">/^(13[0-9]|14[01456879]|15[0-35-9]|16[2567]|17[0-8]|18[0-9]|19[0-35-9])\d{8}$/</span></span><br><span class="line"></span><br><span class="line"><span class="keyword">if</span>(reg_tel.<span class="title function_">test</span>(phone)){</span><br><span class="line"> <span class="variable language_">console</span>.<span class="title function_">log</span>(<span class="string">'电话号码符合要求'</span>)</span><br><span class="line">}<span class="keyword">else</span>{</span><br><span class="line"> <span class="variable language_">console</span>.<span class="title function_">log</span>(<span class="string">'请输入正确的电话号码'</span>)</span><br><span class="line">}</span><br><span class="line"><span class="comment">//2.</span></span><br><span class="line"><span class="keyword">var</span> myreg = <span class="regexp">/^[1][3,4,5,7,8,9][0-9]{9}$/</span>;</span><br><span class="line"><span class="keyword">if</span> (!myreg.<span class="title function_">test</span>(phones)) {</span><br><span class="line"> <span class="comment">//手机号格式错误</span></span><br><span class="line">} <span class="keyword">else</span> {</span><br><span class="line"> <span class="comment">//手机号格式正确</span></span><br><span class="line">}</span><br></pre></td></tr></table></figure>
<h3 id="13-普通参数转表单参数"><a href="#13-普通参数转表单参数" class="headerlink" title="13-普通参数转表单参数"></a>13-普通参数转表单参数</h3><figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br></pre></td><td class="code"><pre><span class="line"> <span class="comment">//部分关键代码</span></span><br><span class="line"><span class="keyword">var</span> formDate = <span class="keyword">new</span> <span class="title class_">FormData</span>();</span><br><span class="line"></span><br><span class="line"> formDate.<span class="title function_">append</span>(<span class="string">'name'</span>,<span class="variable language_">this</span>.<span class="property">name</span>);</span><br><span class="line"></span><br><span class="line"> formDate.<span class="title function_">append</span>(<span class="string">'pwd'</span>,<span class="variable language_">this</span>.<span class="property">pwd</span>);</span><br><span class="line"></span><br><span class="line"> <span class="variable language_">this</span>.<span class="title function_">axios</span>({</span><br><span class="line"></span><br><span class="line"> <span class="attr">method</span>: <span class="string">'post'</span>,</span><br><span class="line"></span><br><span class="line"> <span class="attr">url</span>: <span class="variable language_">this</span>.<span class="property">$baseUrl</span>+<span class="string">"api/site_message/save"</span>,</span><br><span class="line"></span><br><span class="line"> <span class="attr">data</span>: formDate,</span><br><span class="line"></span><br><span class="line"> <span class="attr">headers</span>: { <span class="string">'content-type'</span>: <span class="string">'application/x-www-form-urlencoded'</span> },</span><br><span class="line"></span><br><span class="line"> }).<span class="title function_">then</span>(<span class="function"><span class="params">res</span>=></span>{</span><br><span class="line"></span><br><span class="line"> <span class="variable language_">console</span>.<span class="title function_">log</span>(res);</span><br><span class="line"></span><br><span class="line"> }).<span class="title function_">catch</span>(<span class="function"><span class="params">e</span>=></span>{</span><br><span class="line"></span><br><span class="line"> <span class="variable language_">console</span>.<span class="title function_">log</span>(e);</span><br><span class="line"></span><br><span class="line"> });</span><br></pre></td></tr></table></figure>
<h3 id="14-上传图片转网络地址"><a href="#14-上传图片转网络地址" class="headerlink" title="14-上传图片转网络地址"></a>14-上传图片转网络地址</h3><p>拿到这个对象</p>
<figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">//e.target.files[0]</span></span><br><span class="line"><span class="title class_">File</span> { </span><br><span class="line"> <span class="attr">name</span>: <span class="string">'***'</span>, </span><br><span class="line"> <span class="attr">lastModified</span>: <span class="number">1540088122000</span>,</span><br><span class="line"> <span class="attr">lastModifiedDate</span>: <span class="title class_">Sun</span> <span class="title class_">Oct</span> <span class="number">21</span> <span class="number">2018</span> <span class="number">10</span>:<span class="number">15</span>:<span class="number">22</span> <span class="variable constant_">GMT</span>+<span class="number">0800</span> (中国标准时间),</span><br><span class="line"> <span class="attr">size</span>: <span class="number">49058</span>, </span><br><span class="line"> <span class="attr">type</span>: <span class="string">"image/jpeg"</span></span><br><span class="line"> …}</span><br><span class="line"></span><br><span class="line"> <span class="keyword">var</span> formData = <span class="keyword">new</span> <span class="title class_">FormData</span>();</span><br><span class="line"> formData.<span class="title function_">append</span>(<span class="string">'upload'</span>, file)</span><br></pre></td></tr></table></figure>
<p>(1).原生方式</p>
<figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br></pre></td><td class="code"><pre><span class="line"> <span class="comment">//html部分 </span></span><br><span class="line"><input type=<span class="string">"file"</span> name=<span class="string">""</span> accept=<span class="string">"image/*"</span> id=<span class="string">""</span> @change=<span class="string">"test"</span>></span><br><span class="line"> <span class="comment">//js</span></span><br><span class="line"> <span class="title function_">test</span>(<span class="params">e</span>) {</span><br><span class="line"> <span class="keyword">var</span> file = e.<span class="property">target</span>.<span class="property">files</span>[<span class="number">0</span>];</span><br><span class="line"> <span class="variable language_">console</span>.<span class="title function_">log</span>(file);</span><br><span class="line"> <span class="keyword">var</span> formData = <span class="keyword">new</span> <span class="title class_">FormData</span>();</span><br><span class="line"> formData.<span class="title function_">append</span>(<span class="string">'upload'</span>, file)</span><br><span class="line"> <span class="variable language_">this</span>.<span class="property">$ajax</span>.<span class="title function_">post</span>(<span class="string">"https://meizi.scrstv.com/a/material/uploadAll"</span>,formData).<span class="title function_">then</span>(<span class="function"><span class="params">res</span>=></span>{</span><br><span class="line"> <span class="variable language_">console</span>.<span class="title function_">log</span>(res.<span class="property">data</span>.<span class="property">data</span>);<span class="comment">//网络地址</span></span><br><span class="line"> }).<span class="title function_">catch</span>(<span class="function"><span class="params">e</span>=></span>{</span><br><span class="line"> <span class="variable language_">console</span>.<span class="title function_">log</span>(e);</span><br><span class="line"> })</span><br><span class="line"> },</span><br></pre></td></tr></table></figure>
<p>(2).vant组件</p>
<figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">//html部分</span></span><br><span class="line"><van-uploader :after-read=<span class="string">"afterRead"</span> preview-image /></span><br><span class="line"><span class="comment">//js部分</span></span><br><span class="line"> <span class="title function_">afterRead</span>(<span class="params">file</span>) {</span><br><span class="line"> <span class="variable language_">console</span>.<span class="title function_">log</span>(file.<span class="property">file</span>);</span><br><span class="line"> <span class="keyword">var</span> tarFile = file.<span class="property">file</span>;</span><br><span class="line"> <span class="keyword">var</span> formData = <span class="keyword">new</span> <span class="title class_">FormData</span>();</span><br><span class="line"> formData.<span class="title function_">append</span>(<span class="string">'upload'</span>, tarFile)</span><br><span class="line"> <span class="variable language_">this</span>.<span class="property">$ajax</span>.<span class="title function_">post</span>(<span class="string">"https://meizi.scrstv.com/a/material/uploadAll"</span>,formData).<span class="title function_">then</span>(<span class="function"><span class="params">res</span>=></span>{</span><br><span class="line"> <span class="variable language_">console</span>.<span class="title function_">log</span>(res.<span class="property">data</span>.<span class="property">data</span>);</span><br><span class="line"> <span class="comment">// this.mypic = res.data.data</span></span><br><span class="line"> }).<span class="title function_">catch</span>(<span class="function"><span class="params">e</span>=></span>{</span><br><span class="line"> <span class="variable language_">console</span>.<span class="title function_">log</span>(e);</span><br><span class="line"> })</span><br><span class="line"> }</span><br></pre></td></tr></table></figure>
<figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br></pre></td><td class="code"><pre><span class="line">补充： 图片文件转base64 转网络路径</span><br><span class="line"><input type=<span class="string">"file"</span> name=<span class="string">""</span> id=<span class="string">""</span> accept=<span class="string">"image/*"</span> @change=<span class="string">"chan($event)"</span>></span><br><span class="line"></span><br><span class="line"> <span class="title function_">chan</span>(<span class="params">e</span>) {</span><br><span class="line"> <span class="keyword">let</span> file = e.<span class="property">target</span>.<span class="property">files</span>[<span class="number">0</span>];</span><br><span class="line"></span><br><span class="line"> <span class="variable language_">this</span>.<span class="title function_">fileByBase64</span>(file,<span class="function">(<span class="params">base64</span>)=></span>{</span><br><span class="line"> <span class="variable language_">console</span>.<span class="title function_">log</span>(base64);</span><br><span class="line"> <span class="keyword">var</span> url = base64.<span class="title function_">split</span>(<span class="string">","</span>)[<span class="number">1</span>];</span><br><span class="line"> <span class="keyword">var</span> formData = <span class="keyword">new</span> <span class="title class_">FormData</span>();</span><br><span class="line"> formData.<span class="title function_">append</span>(<span class="string">'baseArr'</span>, url)</span><br><span class="line"> <span class="title function_">mybaseTopic</span>(formData).<span class="title function_">then</span>(<span class="function"><span class="params">res</span>=></span>{</span><br><span class="line"> <span class="variable language_">console</span>.<span class="title function_">log</span>(res)</span><br><span class="line"> }).<span class="title function_">catch</span>(<span class="function"><span class="params">e</span>=></span>{</span><br><span class="line"> <span class="variable language_">console</span>.<span class="title function_">log</span>(e);</span><br><span class="line"> })</span><br><span class="line"> })</span><br><span class="line"> },</span><br><span class="line"> <span class="comment">// 文件转base64</span></span><br><span class="line"> <span class="title function_">fileByBase64</span>(<span class="params">file, callback</span>){</span><br><span class="line"> <span class="keyword">let</span> reader = <span class="keyword">new</span> <span class="title class_">FileReader</span>();</span><br><span class="line"> <span class="comment">// 传入一个参数对象即可得到基于该参数对象的文本内容</span></span><br><span class="line"> reader.<span class="title function_">readAsDataURL</span>(file);</span><br><span class="line"> reader.<span class="property">onload</span> = <span class="keyword">function</span> (<span class="params">e</span>) {</span><br><span class="line"> <span class="comment">// target.result 该属性表示目标对象的DataURL</span></span><br><span class="line"> <span class="title function_">callback</span>(e.<span class="property">target</span>.<span class="property">result</span>)</span><br><span class="line"> </span><br><span class="line"> };</span><br><span class="line"> },</span><br><span class="line"> </span><br></pre></td></tr></table></figure>
<h3 id="15-时间戳转天小时分秒"><a href="#15-时间戳转天小时分秒" class="headerlink" title="15-时间戳转天小时分秒"></a>15-时间戳转天小时分秒</h3><figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br></pre></td><td class="code"><pre><span class="line"><script type=<span class="string">"text/javascript"</span>> </span><br><span class="line"> <span class="keyword">var</span> date1= <span class="string">'2022/05/01 00:00:00'</span>; <span class="comment">//开始时间</span></span><br><span class="line"> <span class="keyword">var</span> date2 = <span class="keyword">new</span> <span class="title class_">Date</span>(); <span class="comment">//结束时间</span></span><br><span class="line"> <span class="keyword">var</span> date3 = date2.<span class="title function_">getTime</span>() - <span class="keyword">new</span> <span class="title class_">Date</span>(date1).<span class="title function_">getTime</span>(); <span class="comment">//时间差的毫秒数 </span></span><br><span class="line"> <span class="comment">//------------------------------</span></span><br><span class="line"> <span class="comment">//计算出相差天数</span></span><br><span class="line"> <span class="keyword">var</span> days=<span class="title class_">Math</span>.<span class="title function_">floor</span>(date3/(<span class="number">24</span>*<span class="number">3600</span>*<span class="number">1000</span>))</span><br><span class="line"> <span class="comment">//计算出小时数</span></span><br><span class="line"> <span class="keyword">var</span> leave1=date3%(<span class="number">24</span>*<span class="number">3600</span>*<span class="number">1000</span>) <span class="comment">//计算天数后剩余的毫秒数</span></span><br><span class="line"> <span class="keyword">var</span> hours=<span class="title class_">Math</span>.<span class="title function_">floor</span>(leave1/(<span class="number">3600</span>*<span class="number">1000</span>))</span><br><span class="line"> <span class="comment">//计算相差分钟数</span></span><br><span class="line"> <span class="keyword">var</span> leave2=leave1%(<span class="number">3600</span>*<span class="number">1000</span>) <span class="comment">//计算小时数后剩余的毫秒数</span></span><br><span class="line"> <span class="keyword">var</span> minutes=<span class="title class_">Math</span>.<span class="title function_">floor</span>(leave2/(<span class="number">60</span>*<span class="number">1000</span>))</span><br><span class="line"> <span class="comment">//计算相差秒数</span></span><br><span class="line"> <span class="keyword">var</span> leave3=leave2%(<span class="number">60</span>*<span class="number">1000</span>) <span class="comment">//计算分钟数后剩余的毫秒数</span></span><br><span class="line"> <span class="keyword">var</span> seconds=<span class="title class_">Math</span>.<span class="title function_">round</span>(leave3/<span class="number">1000</span>)</span><br><span class="line"> <span class="title function_">alert</span>(<span class="string">" 相差 "</span>+days+<span class="string">"天 "</span>+hours+<span class="string">"小时 "</span>+minutes+<span class="string">" 分钟"</span>+seconds+<span class="string">" 秒"</span>)</span><br><span class="line"></script></span><br></pre></td></tr></table></figure>
<h3 id="16-vue图片转为File文件类型"><a href="#16-vue图片转为File文件类型" class="headerlink" title="16-vue图片转为File文件类型"></a>16-vue图片转为File文件类型</h3><p><strong>步骤：</strong></p>
<ul>
<li>先把<code>图片路径</code>转为<code>base64</code>格式 </li>
<li>再把<code>base64</code>转为<code>File文件</code></li>
</ul>
<figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br></pre></td><td class="code"><pre><span class="line">使用：</span><br><span class="line"> <span class="title function_">handleImgToBase64</span>(<span class="string">'图片地址'</span>)</span><br><span class="line"></span><br><span class="line"> <span class="comment">/* url: 图片路径 cb: callback */</span></span><br><span class="line"> <span class="title function_">handleImgToBase64</span>(<span class="params">url, cb</span>) {</span><br><span class="line"> <span class="keyword">let</span> that = <span class="variable language_">this</span>;</span><br><span class="line"> <span class="keyword">var</span> image = <span class="keyword">new</span> <span class="title class_">Image</span>();</span><br><span class="line"> image.<span class="property">crossOrigin</span> = <span class="string">''</span>;</span><br><span class="line"> image.<span class="property">src</span> = url;</span><br><span class="line"> image.<span class="property">onload</span> = <span class="keyword">function</span> (<span class="params"></span>) {</span><br><span class="line"> <span class="keyword">let</span> base64 = that.<span class="title function_">imageToBase64</span>(image); <span class="comment">//图片转base64</span></span><br><span class="line"> <span class="variable language_">console</span>.<span class="title function_">log</span>(base64)<span class="comment">//拿到base64</span></span><br><span class="line"> </span><br><span class="line"> <span class="keyword">let</span> file = that.<span class="title function_">base64ToFile</span>(base64, <span class="string">'file'</span>); <span class="comment">//base64转File</span></span><br><span class="line"> <span class="variable language_">console</span>.<span class="title function_">log</span>(file);</span><br><span class="line"> <span class="comment">// 根据自身需求调整【因个人项目逻辑不一样，这里使用回调函数】</span></span><br><span class="line"> <span class="comment">// cb && typeof cb == 'function' && cb(file);</span></span><br><span class="line"> <span class="keyword">return</span> file;</span><br><span class="line"> }</span><br><span class="line"> },</span><br><span class="line"> <span class="title function_">imageToBase64</span>(<span class="params">img</span>) {</span><br><span class="line"> <span class="comment">// Vue.prototype.$imageToBase64 = img => { //定义全局</span></span><br><span class="line"> <span class="keyword">var</span> canvas = <span class="variable language_">document</span>.<span class="title function_">createElement</span>(<span class="string">"canvas"</span>);</span><br><span class="line"> canvas.<span class="property">width</span> = img.<span class="property">width</span>;</span><br><span class="line"> canvas.<span class="property">height</span> = img.<span class="property">height</span>;</span><br><span class="line"> <span class="keyword">var</span> ctx = canvas.<span class="title function_">getContext</span>(<span class="string">"2d"</span>);</span><br><span class="line"> ctx.<span class="title function_">drawImage</span>(img, <span class="number">0</span>, <span class="number">0</span>, img.<span class="property">width</span>, img.<span class="property">height</span>);</span><br><span class="line"> <span class="keyword">var</span> ext = img.<span class="property">src</span>.<span class="title function_">substring</span>(img.<span class="property">src</span>.<span class="title function_">lastIndexOf</span>(<span class="string">"."</span>) + <span class="number">1</span>).<span class="title function_">toLowerCase</span>();</span><br><span class="line"> <span class="keyword">var</span> dataURL = canvas.<span class="title function_">toDataURL</span>(<span class="string">"image/jpeg"</span> + ext);</span><br><span class="line"> <span class="keyword">return</span> dataURL;</span><br><span class="line"> },</span><br><span class="line"> <span class="title function_">base64ToFile</span>(<span class="params">urlData, fileName</span>){</span><br><span class="line"> <span class="keyword">let</span> arr = urlData.<span class="title function_">split</span>(<span class="string">','</span>);</span><br><span class="line"> <span class="keyword">let</span> mime = arr[<span class="number">0</span>].<span class="title function_">match</span>(<span class="regexp">/:(.*?);/</span>)[<span class="number">1</span>];</span><br><span class="line"> <span class="keyword">let</span> bytes = <span class="title function_">atob</span>(arr[<span class="number">1</span>]); <span class="comment">// 解码base64</span></span><br><span class="line"> <span class="keyword">let</span> n = bytes.<span class="property">length</span></span><br><span class="line"> <span class="keyword">let</span> ia = <span class="keyword">new</span> <span class="title class_">Uint8Array</span>(n);</span><br><span class="line"> <span class="keyword">while</span> (n--) {</span><br><span class="line"> ia[n] = bytes.<span class="title function_">charCodeAt</span>(n);</span><br><span class="line"> }</span><br><span class="line"> <span class="keyword">return</span> <span class="keyword">new</span> <span class="title class_">File</span>([ia], fileName, { <span class="attr">type</span>: mime });</span><br><span class="line"> }</span><br></pre></td></tr></table></figure>
<h3 id="17-图片文字水印"><a href="#17-图片文字水印" class="headerlink" title="17-图片文字水印"></a>17-图片文字水印</h3><figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br><span class="line">43</span><br><span class="line">44</span><br><span class="line">45</span><br><span class="line">46</span><br><span class="line">47</span><br><span class="line">48</span><br><span class="line">49</span><br><span class="line">50</span><br><span class="line">51</span><br><span class="line">52</span><br><span class="line">53</span><br><span class="line">54</span><br><span class="line">55</span><br><span class="line">56</span><br><span class="line">57</span><br><span class="line">58</span><br><span class="line">59</span><br><span class="line">60</span><br><span class="line">61</span><br><span class="line">62</span><br><span class="line">63</span><br><span class="line">64</span><br><span class="line">65</span><br><span class="line">66</span><br><span class="line">67</span><br><span class="line">68</span><br><span class="line">69</span><br><span class="line">70</span><br><span class="line">71</span><br><span class="line">72</span><br><span class="line">73</span><br><span class="line">74</span><br><span class="line">75</span><br><span class="line">76</span><br><span class="line">77</span><br><span class="line">78</span><br><span class="line">79</span><br><span class="line">80</span><br><span class="line">81</span><br><span class="line">82</span><br><span class="line">83</span><br><span class="line">84</span><br><span class="line">85</span><br><span class="line">86</span><br><span class="line">87</span><br><span class="line">88</span><br><span class="line">89</span><br><span class="line">90</span><br><span class="line">91</span><br><span class="line">92</span><br><span class="line">93</span><br><span class="line">94</span><br><span class="line">95</span><br><span class="line">96</span><br><span class="line">97</span><br><span class="line">98</span><br><span class="line">99</span><br><span class="line">100</span><br><span class="line">101</span><br><span class="line">102</span><br><span class="line">103</span><br><span class="line">104</span><br><span class="line">105</span><br><span class="line">106</span><br><span class="line">107</span><br><span class="line">108</span><br><span class="line">109</span><br><span class="line">110</span><br><span class="line">111</span><br><span class="line">112</span><br><span class="line">113</span><br><span class="line">114</span><br><span class="line">115</span><br><span class="line">116</span><br><span class="line">117</span><br><span class="line">118</span><br><span class="line">119</span><br><span class="line">120</span><br><span class="line">121</span><br><span class="line">122</span><br><span class="line">123</span><br><span class="line">124</span><br><span class="line">125</span><br><span class="line">126</span><br><span class="line">127</span><br><span class="line">128</span><br><span class="line">129</span><br><span class="line">130</span><br><span class="line">131</span><br><span class="line">132</span><br><span class="line">133</span><br><span class="line">134</span><br><span class="line">135</span><br><span class="line">136</span><br></pre></td><td class="code"><pre><span class="line"><button @click="test">按钮</button></span><br><span class="line"></span><br><span class="line">methods:{</span><br><span class="line"> test() {</span><br><span class="line"> this.handleImgToBase64(this.hx)</span><br><span class="line"> },</span><br><span class="line"> //</span><br><span class="line"> handleImgToBase64(url) {</span><br><span class="line"> let that = this;</span><br><span class="line"> var image = new Image();</span><br><span class="line"> image.crossOrigin = '';</span><br><span class="line"> image.src = url;</span><br><span class="line"> image.onload = function () {</span><br><span class="line"> let base64 = that.imageToBase64(image,); //图片转base64</span><br><span class="line"> // console.log(base64,666);</span><br><span class="line"> let file = that.base64ToFile(base64, 'file'); //base64转File</span><br><span class="line"> that.addWatermark1(file)</span><br><span class="line"> }</span><br><span class="line"> },</span><br><span class="line"> //2.base64转File</span><br><span class="line"> base64ToFile(urlData, fileName){</span><br><span class="line"> let arr = urlData.split(',');</span><br><span class="line"> let mime = arr[0].match(/:(.*?);/)[1];</span><br><span class="line"> let bytes = atob(arr[1]); // 解码base64</span><br><span class="line"> let n = bytes.length</span><br><span class="line"> let ia = new Uint8Array(n);</span><br><span class="line"> while (n--) {</span><br><span class="line"> ia[n] = bytes.charCodeAt(n);</span><br><span class="line"> }</span><br><span class="line"> return new File([ia], fileName, { type: mime });</span><br><span class="line"> },</span><br><span class="line"> // 1.图片转base64</span><br><span class="line"> imageToBase64(img) {</span><br><span class="line"> // Vue.prototype.$imageToBase64 = img => { //定义全局</span><br><span class="line"> var canvas = document.createElement("canvas");</span><br><span class="line"> canvas.width = img.width;</span><br><span class="line"> canvas.height = img.height;</span><br><span class="line"> var ctx = canvas.getContext("2d");</span><br><span class="line"> ctx.drawImage(img, 0, 0, img.width, img.height);</span><br><span class="line"> var ext = img.src.substring(img.src.lastIndexOf(".") + 1).toLowerCase();</span><br><span class="line"> var dataURL = canvas.toDataURL("image/jpeg" + ext);</span><br><span class="line"> return dataURL;</span><br><span class="line"> },</span><br><span class="line"></span><br><span class="line"> //4-Base64转成canvas</span><br><span class="line"> async imgToCanvas(base64,callback) {</span><br><span class="line"> // 创建img元素</span><br><span class="line"> const img = document.createElement('img')</span><br><span class="line"> img.setAttribute('src', base64)</span><br><span class="line"> await new Promise((resolve) => (img.onload = resolve))</span><br><span class="line"> // 创建canvas DOM元素，并设置其宽高和图片一样</span><br><span class="line"> const canvas3 = document.createElement('canvas')</span><br><span class="line"></span><br><span class="line"> canvas3.width = img.width</span><br><span class="line"> canvas3.height = img.height</span><br><span class="line"> // 坐标(0,0) 表示从此处开始绘制，相当于偏移。</span><br><span class="line"> canvas3.getContext('2d').drawImage(img, 0, 0)</span><br><span class="line"> callback(canvas3)</span><br><span class="line"> // return canvas3</span><br><span class="line"> },</span><br><span class="line"> //. 给canvas添加水印</span><br><span class="line"> addWatermark(canvas, text) {</span><br><span class="line"> const ctx = canvas.getContext('2d')</span><br><span class="line"> ctx.fillStyle = 'rgba(0,0,0,.5)';//颜色 透明度</span><br><span class="line"> // ctx.rotate(-0.05);//旋转</span><br><span class="line"> ctx.textBaseline = 'middle';</span><br><span class="line"> ctx.font = 16 + 'px Arial';//文字大小</span><br><span class="line"> // ctx.font = this.value_daxiao + 'px Arial';//文字大小</span><br><span class="line"> ctx.textAlign = 'center'</span><br><span class="line"></span><br><span class="line"> // ctx.fillText(text,ctx.canvas.width /2, ctx.canvas.height / 2);</span><br><span class="line"> ctx.fillText(text,700, 39);</span><br><span class="line"> return canvas</span><br><span class="line"> },</span><br><span class="line"> // canvas转成img</span><br><span class="line"> convasToImg(canvas, type) {</span><br><span class="line"> // 新建Image对象，可以理解为DOM</span><br><span class="line"> let image = new Image()</span><br><span class="line"> // canvas.toDataURL 返回的是一串Base64编码的URL</span><br><span class="line"> // 指定格式 PNG</span><br><span class="line"> image.src = canvas.toDataURL(type)</span><br><span class="line"> return image</span><br><span class="line"> },</span><br><span class="line"> // 3333333333333333333333333333333333333333333</span><br><span class="line"> async addWatermark1(file) {</span><br><span class="line"> let that = this;</span><br><span class="line"> let blob = {};</span><br><span class="line"> const _URL = window.URL || window.webkitURL;</span><br><span class="line"> const img = new Image();</span><br><span class="line"> img.src = _URL.createObjectURL(file);</span><br><span class="line"> await new Promise(resolve => {</span><br><span class="line"> img.onload = async () => {</span><br><span class="line"> const canvas = document.createElement('canvas');</span><br><span class="line"> canvas.width = img.width;</span><br><span class="line"> canvas.height = img.height;</span><br><span class="line"> const context = canvas.getContext('2d');</span><br><span class="line"> context.drawImage(img, 0, 0);</span><br><span class="line"> // 水印图片</span><br><span class="line"> const watermarkImg = new Image();</span><br><span class="line"> watermarkImg.src = that.myimg; // logo</span><br><span class="line"> await new Promise(resolve => {</span><br><span class="line"> watermarkImg.onload = () => {</span><br><span class="line"> //绘制图片</span><br><span class="line"> context.drawImage(watermarkImg, 600, 0);</span><br><span class="line"> const base64 = canvas.toDataURL('image/png');</span><br><span class="line"> console.log(base64,456);</span><br><span class="line"></span><br><span class="line"> // 2. 调用方法2：把base64转换为Canvas</span><br><span class="line"> that.imgToCanvas(base64,async (tempCanvas)=>{</span><br><span class="line"> console.log(tempCanvas);</span><br><span class="line"> let word = '我是水印'</span><br><span class="line"> const canvas = that.addWatermark(tempCanvas, word) //3.调用方法3： 写入水印到Canvas</span><br><span class="line"> // canvas转成img</span><br><span class="line"> const img = that.convasToImg(canvas, 'image/png') //4. 调用方法4：把Canvas转换为image文件</span><br><span class="line"> // console.log(img.src,6);</span><br><span class="line"> var url = img.src.split(",")[1];</span><br><span class="line"> var formData = new FormData();</span><br><span class="line"> formData.append('baseArr', url);</span><br><span class="line"> mybaseTopic(formData).then(res=>{</span><br><span class="line"> console.log(res)</span><br><span class="line"> }).catch(e=>{</span><br><span class="line"> console.log(e);</span><br><span class="line"> })</span><br><span class="line"> }) </span><br><span class="line"></span><br><span class="line"> resolve();</span><br><span class="line"> }</span><br><span class="line"> });</span><br><span class="line"> resolve();</span><br><span class="line"> };</span><br><span class="line"> });</span><br><span class="line"> return new File([blob], file.name, {</span><br><span class="line"> type: file.type,</span><br><span class="line"> });</span><br><span class="line"> },</span><br><span class="line"> }</span><br></pre></td></tr></table></figure>
<h3 id="18-保留两位小数"><a href="#18-保留两位小数" class="headerlink" title="18-保留两位小数"></a>18-保留两位小数</h3><figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">function</span> <span class="title function_">precision</span>(<span class="params">num</span>) {</span><br><span class="line"> <span class="keyword">let</span> z = <span class="built_in">parseInt</span>(num)</span><br><span class="line"> <span class="keyword">let</span> len = <span class="number">4</span></span><br><span class="line"> <span class="keyword">if</span>(z.<span class="title function_">toString</span>().<span class="property">length</span>><span class="number">2</span>) {</span><br><span class="line"> len = z.<span class="title function_">toString</span>().<span class="property">length</span>*<span class="number">1</span>+<span class="number">2</span></span><br><span class="line"> }</span><br><span class="line"> <span class="keyword">return</span> <span class="built_in">parseFloat</span>(num.<span class="title function_">toPrecision</span>(len));</span><br><span class="line"> }</span><br></pre></td></tr></table></figure>
<h3 id="19-vue路由传递对象"><a href="#19-vue路由传递对象" class="headerlink" title="19-vue路由传递对象"></a>19-vue路由传递对象</h3><figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br></pre></td><td class="code"><pre><span class="line"><span class="number">1.</span>传 </span><br><span class="line"><span class="variable language_">this</span>.<span class="property">$router</span>.<span class="title function_">push</span>({</span><br><span class="line"> <span class="attr">path</span>: <span class="string">"/test"</span>,</span><br><span class="line"> <span class="attr">query</span>: {</span><br><span class="line"> <span class="attr">param</span>:<span class="built_in">encodeURIComponent</span>(<span class="title class_">JSON</span>.<span class="title function_">stringify</span>(<span class="variable language_">this</span>.<span class="property">ok</span>)),</span><br><span class="line"> },</span><br><span class="line"> });</span><br><span class="line"><span class="number">2.</span>接收</span><br><span class="line"> <span class="title function_">created</span>(<span class="params"></span>) {</span><br><span class="line"> <span class="keyword">let</span> urlObj = <span class="title class_">JSON</span>.<span class="title function_">parse</span>(<span class="built_in">decodeURIComponent</span>(<span class="variable language_">this</span>.<span class="property">$route</span>.<span class="property">query</span>.<span class="property">param</span>))</span><br><span class="line"> },</span><br></pre></td></tr></table></figure>
<h3 id="20-文字一行显示"><a href="#20-文字一行显示" class="headerlink" title="20-文字一行显示"></a>20-文字一行显示</h3><figure class="highlight css"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br></pre></td><td class="code"><pre><span class="line"> //多行</span><br><span class="line"><span class="selector-tag">div</span>{</span><br><span class="line"> <span class="attribute">width</span>: <span class="number">200px</span>;</span><br><span class="line"> <span class="comment">/* 不要设置高度 */</span></span><br><span class="line"> <span class="attribute">overflow</span>: hidden;</span><br><span class="line"> <span class="attribute">text-overflow</span>: ellipsis;</span><br><span class="line"> <span class="comment">/* 1.必须结合的属性，将对象作为弹性伸缩盒子模型显示 */</span></span><br><span class="line"> <span class="attribute">display</span>: -webkit-box;</span><br><span class="line"> <span class="comment">/* 2.是一个 不规范的属性，它没有出现在 CSS 规范草案中。限制在一个块元素显示的文本的行数。为了实现该效果，它需要组合其他外来的WebKit属性 */</span></span><br><span class="line"> -webkit-line-clamp: <span class="number">3</span>;</span><br><span class="line"> <span class="comment">/* 3.必须结合的属性，设置或检索伸缩盒对象的子元素的排列方式 */</span></span><br><span class="line"> -webkit-box-orient: vertical; </span><br><span class="line"> }</span><br><span class="line">//单行</span><br><span class="line"><span class="selector-tag">div</span>{</span><br><span class="line"> <span class="attribute">white-space</span>:nowrap;//文字不换行</span><br><span class="line"> <span class="attribute">overflow</span>: hidden;</span><br><span class="line"> <span class="attribute">text-overflow</span>: ellipsis;</span><br><span class="line"> }</span><br><span class="line"></span><br></pre></td></tr></table></figure>
<h3 id="21-保留两位小数"><a href="#21-保留两位小数" class="headerlink" title="21-保留两位小数"></a>21-保留两位小数</h3><figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">//num: 123（number/string）</span></span><br><span class="line"><span class="keyword">function</span> <span class="title function_">pointTwo</span>(<span class="params">num</span>) {</span><br><span class="line"> <span class="keyword">let</span> newNum = num.<span class="title function_">toString</span>();</span><br><span class="line"> <span class="keyword">let</span> arr = newNum.<span class="title function_">split</span>(<span class="string">'.'</span>)</span><br><span class="line"> <span class="keyword">if</span>(!arr[<span class="number">1</span>]) {</span><br><span class="line"> <span class="comment">//整数</span></span><br><span class="line"> arr[<span class="number">1</span>] = <span class="string">'00'</span></span><br><span class="line"> }</span><br><span class="line"> <span class="keyword">if</span>(arr[<span class="number">1</span>] && arr[<span class="number">1</span>].<span class="title function_">toString</span>().<span class="property">length</span> < <span class="number">2</span>) {</span><br><span class="line"> <span class="comment">//一位小数</span></span><br><span class="line"> arr[<span class="number">1</span>] = arr[<span class="number">1</span>].<span class="title function_">toString</span>().<span class="title function_">padEnd</span>(<span class="number">2</span>,<span class="number">0</span>)</span><br><span class="line"> }</span><br><span class="line"> newNum = arr.<span class="title function_">join</span>(<span class="string">'.'</span>)</span><br><span class="line"> <span class="keyword">return</span> newNum</span><br><span class="line">}</span><br></pre></td></tr></table></figure>
<h3 id="22-查找A字符串是否包含B字符串"><a href="#22-查找A字符串是否包含B字符串" class="headerlink" title="22-查找A字符串是否包含B字符串"></a>22-查找A字符串是否包含B字符串</h3><p><strong>方法一: indexOf() (推荐)</strong></p>
<figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">var</span> str = <span class="string">"123"</span></span><br><span class="line"><span class="variable language_">console</span>.<span class="title function_">log</span>(str.<span class="title function_">indexOf</span>(<span class="string">"2"</span>) != -<span class="number">1</span>); <span class="comment">// true</span></span><br><span class="line"><span class="comment">//indexOf() 方法可返回某个指定的字符串值在字符串中首次出现的位置。如果要检索的字符串值没有出现，则该方法返回 -1。</span></span><br></pre></td></tr></table></figure>
<p><strong>方法二:match()</strong></p>
<figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">var</span> str = <span class="string">"123"</span></span><br><span class="line"><span class="keyword">var</span> reg = <span class="title class_">RegExp</span>(<span class="regexp">/3/</span>);</span><br><span class="line"><span class="keyword">if</span>(str.<span class="title function_">match</span>(reg)){</span><br><span class="line"> <span class="comment">//包含；</span></span><br><span class="line">}</span><br><span class="line"><span class="comment">//match() 方法可在字符串内检索指定的值，或找到一个或多个正则表达式的匹配。</span></span><br></pre></td></tr></table></figure>
<p><strong>方法三: search()</strong></p>
<figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">var</span> str = <span class="string">"123"</span></span><br><span class="line"><span class="variable language_">console</span>.<span class="title function_">log</span>(str.<span class="title function_">search</span>(<span class="string">"2"</span>) != -<span class="number">1</span>); <span class="comment">// true</span></span><br><span class="line"><span class="comment">//search() 方法用于检索字符串中指定的子字符串，或检索与正则表达式相匹配的子字符串。如果没有找到任何匹配的子串，则返回 -1。</span></span><br></pre></td></tr></table></figure>
<p><strong>方法四: test()</strong></p>
<figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">var</span> str = <span class="string">"123"</span></span><br><span class="line"><span class="keyword">var</span> reg = <span class="title class_">RegExp</span>(<span class="regexp">/3/</span>);</span><br><span class="line"><span class="variable language_">console</span>.<span class="title function_">log</span>(reg.<span class="title function_">test</span>(str) != -<span class="number">1</span>); <span class="comment">// true</span></span><br><span class="line"><span class="comment">//test() 方法用于检索字符串中指定的值。返回 true 或 false。</span></span><br></pre></td></tr></table></figure>
<p><strong>方法五:exec()</strong></p>
<figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">var</span> str = <span class="string">"123"</span></span><br><span class="line"><span class="keyword">var</span> reg = <span class="title class_">RegExp</span>(<span class="regexp">/3/</span>);</span><br><span class="line"><span class="keyword">if</span>(reg.<span class="title function_">exec</span>(str)){</span><br><span class="line"> <span class="comment">//包含；</span></span><br><span class="line">}</span><br><span class="line"><span class="comment">//exec() 方法用于检索字符串中的正则表达式的匹配。返回一个数组，其中存放匹配的结果。如果未找到匹配，则返回值为 null。</span></span><br></pre></td></tr></table></figure>
<p><strong>方法六:includes()</strong></p>
<figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">//数组和字符串都拥有该方法</span></span><br><span class="line">str_arr.<span class="title function_">includes</span>(<span class="string">'xxx'</span>, start)</span><br></pre></td></tr></table></figure>
<h3 id="23-jq-添加类名（选中样式）"><a href="#23-jq-添加类名（选中样式）" class="headerlink" title="23-jq 添加类名（选中样式）"></a>23-jq 添加类名（选中样式）</h3><figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">// 不能用箭头函数</span></span><br><span class="line">$(<span class="variable language_">this</span>).<span class="title function_">addClass</span>(<span class="string">'selected'</span>).<span class="title function_">siblings</span>().<span class="title function_">removeClass</span>(<span class="string">'selected'</span>)</span><br></pre></td></tr></table></figure>
<h3 id="24-async-x2F-await-基本使用"><a href="#24-async-x2F-await-基本使用" class="headerlink" title="24-async/await 基本使用"></a>24-async/await 基本使用</h3><figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">async</span> <span class="title function_">ajaxstart</span>(<span class="params"></span>) {</span><br><span class="line"> <span class="keyword">await</span> <span class="variable language_">this</span>.<span class="title function_">first</span>()</span><br><span class="line"> <span class="variable language_">this</span>.<span class="title function_">second</span>()</span><br><span class="line"> },</span><br><span class="line"> <span class="title function_">first</span>(<span class="params"></span>) {</span><br><span class="line"> <span class="keyword">return</span> <span class="keyword">new</span> <span class="title class_">Promise</span>(<span class="function">(<span class="params">resole,reject</span>)=></span>{</span><br><span class="line"> <span class="title function_">getName</span>({<span class="attr">id</span>:<span class="variable language_">this</span>.<span class="property">$route</span>.<span class="property">query</span>.<span class="property">fillingId</span>}).<span class="title function_">then</span>(<span class="function"><span class="params">res</span>=></span>{</span><br><span class="line"> <span class="keyword">if</span>(res.<span class="property">status</span> == <span class="number">200</span>) {</span><br><span class="line"> <span class="variable language_">console</span>.<span class="title function_">log</span>(<span class="string">'先执行'</span>)</span><br><span class="line"> <span class="title function_">resole</span>()</span><br><span class="line"> }</span><br><span class="line"> })</span><br><span class="line"> })</span><br><span class="line"> },</span><br><span class="line"><span class="title function_">second</span>(<span class="params"></span>) {</span><br><span class="line"> <span class="variable language_">console</span>.<span class="title function_">log</span>(<span class="string">'后执行'</span>)</span><br><span class="line"> },</span><br></pre></td></tr></table></figure>
<h3 id="25-前端压缩图片"><a href="#25-前端压缩图片" class="headerlink" title="25-前端压缩图片"></a>25-前端压缩图片</h3><figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br><span class="line">43</span><br><span class="line">44</span><br><span class="line">45</span><br><span class="line">46</span><br><span class="line">47</span><br><span class="line">48</span><br><span class="line">49</span><br><span class="line">50</span><br><span class="line">51</span><br><span class="line">52</span><br><span class="line">53</span><br><span class="line">54</span><br><span class="line">55</span><br><span class="line">56</span><br><span class="line">57</span><br><span class="line">58</span><br><span class="line">59</span><br><span class="line">60</span><br><span class="line">61</span><br><span class="line">62</span><br><span class="line">63</span><br><span class="line">64</span><br><span class="line">65</span><br><span class="line">66</span><br><span class="line">67</span><br><span class="line">68</span><br><span class="line">69</span><br><span class="line">70</span><br><span class="line">71</span><br><span class="line">72</span><br><span class="line">73</span><br><span class="line">74</span><br><span class="line">75</span><br><span class="line">76</span><br><span class="line">77</span><br><span class="line">78</span><br><span class="line">79</span><br><span class="line">80</span><br><span class="line">81</span><br><span class="line">82</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">//vue</span></span><br><span class="line"><span class="comment">// 参数：file: file文件 也就是e.target.files[0]； callback:处理函数</span></span><br><span class="line"> <span class="title function_">compressImg</span>(<span class="params">file,callback</span>) {</span><br><span class="line"> <span class="keyword">let</span> disposeFile = file;</span><br><span class="line"> <span class="keyword">if</span> (<span class="title class_">Object</span>.<span class="property"><span class="keyword">prototype</span></span>.<span class="property">toString</span>.<span class="title function_">call</span>(file) === <span class="string">'[object Blob]'</span>) {</span><br><span class="line"> disposeFile = <span class="keyword">new</span> <span class="title class_">File</span>([file], file.<span class="property">name</span>, { <span class="attr">type</span>: file.<span class="property">type</span> });</span><br><span class="line"> }</span><br><span class="line"> <span class="keyword">const</span> read = <span class="keyword">new</span> <span class="title class_">FileReader</span>(),</span><br><span class="line"> _that = <span class="variable language_">this</span>;</span><br><span class="line"> <span class="keyword">const</span> fileSize = <span class="built_in">parseFloat</span>(<span class="built_in">parseInt</span>(disposeFile[<span class="string">'size'</span>]) / <span class="number">1024</span> / <span class="number">1024</span>).<span class="title function_">toFixed</span>(<span class="number">2</span>);</span><br><span class="line"> <span class="comment">// 小于8M不压缩</span></span><br><span class="line"> <span class="keyword">if</span> (fileSize < <span class="number">8</span>){</span><br><span class="line"> <span class="keyword">return</span> file</span><br><span class="line"> }</span><br><span class="line"> read.<span class="title function_">readAsDataURL</span>(disposeFile);</span><br><span class="line"> <span class="keyword">return</span> <span class="keyword">new</span> <span class="title class_">Promise</span>(<span class="function">(<span class="params">resolve, reject</span>) =></span> {</span><br><span class="line"> <span class="keyword">try</span> {</span><br><span class="line"> read.<span class="property">onload</span> = <span class="function">(<span class="params">e</span>) =></span> {</span><br><span class="line"> <span class="keyword">const</span> img = <span class="keyword">new</span> <span class="title class_">Image</span>();</span><br><span class="line"> img.<span class="property">src</span> = e.<span class="property">target</span>.<span class="property">result</span>;</span><br><span class="line"> img.<span class="property">onload</span> = <span class="keyword">function</span> (<span class="params"></span>) {</span><br><span class="line"> <span class="keyword">let</span> w = <span class="title class_">Math</span>.<span class="title function_">floor</span>(<span class="variable language_">this</span>.<span class="property">width</span> / <span class="number">2</span>),</span><br><span class="line"> h = <span class="title class_">Math</span>.<span class="title function_">floor</span>(<span class="variable language_">this</span>.<span class="property">height</span> / <span class="number">2</span>);</span><br><span class="line"> <span class="keyword">const</span> canvas = <span class="variable language_">document</span>.<span class="title function_">createElement</span>(<span class="string">'canvas'</span>);</span><br><span class="line"> <span class="keyword">const</span> ctx = canvas.<span class="title function_">getContext</span>(<span class="string">'2d'</span>);</span><br><span class="line"> <span class="keyword">let</span> base64;</span><br><span class="line"> canvas.<span class="title function_">setAttribute</span>(<span class="string">'width'</span>, w);</span><br><span class="line"> canvas.<span class="title function_">setAttribute</span>(<span class="string">'height'</span>, h);</span><br><span class="line"> ctx.<span class="title function_">drawImage</span>(<span class="variable language_">this</span>, <span class="number">0</span>, <span class="number">0</span>, w, h);</span><br><span class="line"> <span class="comment">// console.log(w, h);</span></span><br><span class="line"> <span class="keyword">if</span> (fileSize < <span class="number">1</span>) {</span><br><span class="line"> <span class="comment">// 如果图片小于一兆 那么不执行压缩操作</span></span><br><span class="line"> base64 = canvas.<span class="title function_">toDataURL</span>(disposeFile[<span class="string">'type'</span>], <span class="number">1</span>);</span><br><span class="line"> } <span class="keyword">else</span> <span class="keyword">if</span> (fileSize > <span class="number">1</span> && fileSize < <span class="number">2</span>) {</span><br><span class="line"> <span class="comment">// 如果图片大于1M并且小于2M 那么压缩0.5</span></span><br><span class="line"> base64 = canvas.<span class="title function_">toDataURL</span>(disposeFile[<span class="string">'type'</span>], <span class="number">0.5</span>);</span><br><span class="line"> } <span class="keyword">else</span> {</span><br><span class="line"> <span class="comment">// 如果图片超过2m 那么压缩0.2</span></span><br><span class="line"> base64 = canvas.<span class="title function_">toDataURL</span>(disposeFile[<span class="string">'type'</span>], <span class="number">0.2</span>);</span><br><span class="line"> }</span><br><span class="line"> </span><br><span class="line"> <span class="keyword">let</span> filew = _that.<span class="title function_">dataURLtoFile</span>(base64, disposeFile.<span class="property">name</span>)</span><br><span class="line"> <span class="title function_">callback</span>(filew)</span><br><span class="line"></span><br><span class="line"> };</span><br><span class="line"> };</span><br><span class="line"> } <span class="keyword">catch</span> (error) {</span><br><span class="line"> <span class="title function_">reject</span>(disposeFile);</span><br><span class="line"> }</span><br><span class="line"> });</span><br><span class="line"> },</span><br><span class="line"> <span class="comment">//将base64编码转回file文件</span></span><br><span class="line"> <span class="title function_">dataURLtoFile</span>(<span class="params">dataurl, fileName</span>) {</span><br><span class="line"> <span class="comment">// console.log(dataurl,4567);</span></span><br><span class="line"> <span class="keyword">var</span> arr = dataurl.<span class="title function_">split</span>(<span class="string">','</span>),</span><br><span class="line"> mime = arr[<span class="number">0</span>].<span class="title function_">match</span>(<span class="regexp">/:(.*?);/</span>)[<span class="number">1</span>],</span><br><span class="line"> bstr = <span class="title function_">atob</span>(arr[<span class="number">1</span>]),</span><br><span class="line"> n = bstr.<span class="property">length</span>,</span><br><span class="line"> u8arr = <span class="keyword">new</span> <span class="title class_">Uint8Array</span>(n);</span><br><span class="line"> <span class="keyword">while</span> (n--) {</span><br><span class="line"> u8arr[n] = bstr.<span class="title function_">charCodeAt</span>(n);</span><br><span class="line"> }</span><br><span class="line"> <span class="keyword">return</span> <span class="keyword">new</span> <span class="title class_">File</span>([u8arr], fileName, {</span><br><span class="line"> <span class="attr">type</span>: mime,</span><br><span class="line"> });</span><br><span class="line"> },</span><br><span class="line"> <span class="comment">//调用实例 vant上传组件 触发函数afterRead 相当于input change事件</span></span><br><span class="line"> <span class="title function_">afterRead</span>(<span class="params">data</span>) {</span><br><span class="line"> <span class="keyword">var</span> _that = <span class="variable language_">this</span></span><br><span class="line"> _that.<span class="title function_">compressImg</span>(data.<span class="property">file</span>,<span class="keyword">function</span>(<span class="params">file</span>) {</span><br><span class="line"> <span class="keyword">var</span> formData = <span class="keyword">new</span> <span class="title class_">FormData</span>();</span><br><span class="line"> formData.<span class="title function_">append</span>(<span class="string">'upload'</span>, file)</span><br><span class="line"> <span class="title function_">upload</span>(formData).<span class="title function_">then</span>(<span class="function"><span class="params">res</span>=></span>{</span><br><span class="line"> <span class="keyword">if</span>(res.<span class="property">status</span> == <span class="number">200</span>) {</span><br><span class="line"> <span class="variable language_">console</span>.<span class="title function_">log</span>(res);</span><br><span class="line"> }<span class="keyword">else</span> {</span><br><span class="line"> }</span><br><span class="line"> }).<span class="title function_">catch</span>(<span class="function"><span class="params">e</span>=></span>{</span><br><span class="line"></span><br><span class="line"> })</span><br><span class="line"> });</span><br><span class="line"> </span><br></pre></td></tr></table></figure>
<h3 id="26-纯css-三角形"><a href="#26-纯css-三角形" class="headerlink" title="26-纯css 三角形"></a>26-纯css 三角形</h3><figure class="highlight css"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br></pre></td><td class="code"><pre><span class="line"><span class="selector-class">.san</span> {</span><br><span class="line"> <span class="attribute">width</span>: <span class="number">0</span>;</span><br><span class="line"> <span class="attribute">height</span>: <span class="number">0</span>;</span><br><span class="line"> <span class="attribute">border</span>: <span class="number">100px</span> solid;</span><br><span class="line"> <span class="attribute">border-color</span>: orangered skyblue gold yellowgreen;</span><br><span class="line">}</span><br></pre></td></tr></table></figure>
<h3 id="27-拨打电话"><a href="#27-拨打电话" class="headerlink" title="27-拨打电话"></a>27-拨打电话</h3><p style="color: green;">
小程序/ 微信浏览器/普通浏览器 直接使用a标签 <br>
app 需要调用函数 <br>
见项目 p14-2 help 文件
</p>
<figure class="highlight html"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment"><!-- 小程序/ 微信浏览器/普通浏览器 --></span></span><br><span class="line"><span class="tag"><<span class="name">a</span> <span class="attr">href</span>=<span class="string">"tel:02883226310"</span> <span class="attr">class</span>=<span class="string">"call1"</span> <span class="attr">style</span>=<span class="string">'display:none'</span>></span></span><br><span class="line"> <span class="tag"><<span class="name">div</span> <span class="attr">class</span>=<span class="string">"item"</span>></span></span><br><span class="line"> <span class="tag"><<span class="name">p</span>></span>平台热线<span class="tag"></<span class="name">p</span>></span><span class="tag"><<span class="name">img</span> <span class="attr">src</span>=<span class="string">"./img/a.png"</span> <span class="attr">alt</span>=<span class="string">""</span>></span></span><br><span class="line"> <span class="tag"></<span class="name">div</span>></span></span><br><span class="line"><span class="tag"></<span class="name">a</span>></span></span><br><span class="line"><span class="comment"><!-- app --></span></span><br><span class="line"><span class="tag"><<span class="name">a</span> <span class="attr">href</span>=<span class="string">"javascript:;"</span> <span class="attr">onclick</span>=<span class="string">"callPhone1()"</span> <span class="attr">style</span>=<span class="string">'display:none'</span> <span class="attr">class</span>=<span class="string">"call3"</span>></span></span><br><span class="line"> <span class="tag"><<span class="name">div</span> <span class="attr">class</span>=<span class="string">"item"</span>></span></span><br><span class="line"> <span class="tag"><<span class="name">p</span>></span>平台热线<span class="tag"></<span class="name">p</span>></span><span class="tag"><<span class="name">img</span> <span class="attr">src</span>=<span class="string">"./img/a.png"</span> <span class="attr">alt</span>=<span class="string">""</span>></span></span><br><span class="line"> <span class="tag"></<span class="name">div</span>></span></span><br><span class="line"><span class="tag"></<span class="name">a</span>></span></span><br></pre></td></tr></table></figure>
<h3 id="28-VConsole"><a href="#28-VConsole" class="headerlink" title="28-VConsole"></a>28-VConsole</h3><figure class="highlight html"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br></pre></td><td class="code"><pre><span class="line">//在index.html 引入</span><br><span class="line"><span class="tag"><<span class="name">script</span> <span class="attr">src</span>=<span class="string">"https://lf26-cdn-tos.bytecdntp.com/cdn/expire-1-M/vConsole/3.12.1/vconsole.min.js"</span> <span class="attr">type</span>=<span class="string">"application/javascript"</span>></span><span class="tag"></<span class="name">script</span>></span></span><br><span class="line"></span><br><span class="line"><span class="tag"><<span class="name">script</span>></span><span class="language-javascript"></span></span><br><span class="line"><span class="language-javascript"> <span class="keyword">var</span> c = <span class="keyword">new</span> <span class="title class_">VConsole</span>()</span></span><br><span class="line"><span class="language-javascript"></span><span class="tag"></<span class="name">script</span>></span></span><br></pre></td></tr></table></figure>
<h3 id="29-提示窗函数"><a href="#29-提示窗函数" class="headerlink" title="29-提示窗函数"></a>29-提示窗函数</h3><figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">//js</span></span><br><span class="line"><span class="keyword">function</span> <span class="title function_">mytip</span> (title,time) {</span><br><span class="line"> <span class="keyword">let</span> mydiv = <span class="variable language_">document</span>.<span class="title function_">createElement</span>(<span class="string">'div'</span>);</span><br><span class="line"> mydiv.<span class="property">innerHTML</span> = title;</span><br><span class="line"> mydiv.<span class="property">style</span>.<span class="property">cssText</span>=<span class="string">`</span></span><br><span class="line"><span class="string"> position: absolute;</span></span><br><span class="line"><span class="string"> top: 50%; </span></span><br><span class="line"><span class="string"> left: 50%;</span></span><br><span class="line"><span class="string"> transform: translateX(-50%);</span></span><br><span class="line"><span class="string"> background-color:rgba(0,0,0,.8);</span></span><br><span class="line"><span class="string"> color:#fff;</span></span><br><span class="line"><span class="string"> padding:10px 20px;</span></span><br><span class="line"><span class="string"> `</span>;</span><br><span class="line"> <span class="variable language_">document</span>.<span class="property">body</span>.<span class="title function_">appendChild</span>(mydiv)</span><br><span class="line"> <span class="keyword">var</span> timer = <span class="built_in">setTimeout</span>(<span class="function">()=></span>{</span><br><span class="line"> <span class="variable language_">document</span>.<span class="property">body</span>.<span class="title function_">removeChild</span>(mydiv)</span><br><span class="line"> <span class="built_in">clearTimeout</span>(timer)</span><br><span class="line"> },time)</span><br><span class="line">}</span><br><span class="line"><span class="comment">//jq</span></span><br><span class="line"><span class="keyword">function</span> <span class="title function_">mytip</span> (title,time) {</span><br><span class="line"> <span class="keyword">var</span> str = <span class="string">''</span></span><br><span class="line"> str = <span class="string">`</span></span><br><span class="line"><span class="string"> <div class='tips' </span></span><br><span class="line"><span class="string"> style="</span></span><br><span class="line"><span class="string"> position: absolute;top: 50%;</span></span><br><span class="line"><span class="string"> left: 50%;</span></span><br><span class="line"><span class="string"> transform: translateX(-50%);</span></span><br><span class="line"><span class="string"> background-color:rgba(0,0,0,.8);</span></span><br><span class="line"><span class="string"> color:#fff;</span></span><br><span class="line"><span class="string"> padding:10px 20px;</span></span><br><span class="line"><span class="string"> "></span></span><br><span class="line"><span class="string"> <span class="subst">${title}</span></span></span><br><span class="line"><span class="string"> </div></span></span><br><span class="line"><span class="string"> `</span></span><br><span class="line"> $(<span class="string">'body'</span>).<span class="title function_">append</span>(str)</span><br><span class="line"> <span class="keyword">var</span> timer = <span class="built_in">setTimeout</span>(<span class="function">()=></span>{</span><br><span class="line"> $(<span class="string">'.tips'</span>).<span class="title function_">remove</span>()</span><br><span class="line"> <span class="built_in">clearTimeout</span>(timer)</span><br><span class="line"> },time)</span><br><span class="line">}</span><br></pre></td></tr></table></figure>
<h3 id="30-vue-深度修改样式"><a href="#30-vue-深度修改样式" class="headerlink" title="30-vue 深度修改样式"></a>30-vue 深度修改样式</h3><figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br></pre></td><td class="code"><pre><span class="line">sass语法:</span><br><span class="line"> ::v-deep .searchContainer {</span><br><span class="line"> width: 100%;</span><br><span class="line"> }</span><br><span class="line"></span><br><span class="line">less语法:</span><br><span class="line"> :deep(.searchContainer) { // 要注意小括号和花括号中间的空格，没有空格有时候会报错</span><br><span class="line"> width: 100%;</span><br><span class="line"> }</span><br><span class="line"> 或者</span><br><span class="line"> ::deep .searchContainer {</span><br><span class="line"> width: 100%;</span><br><span class="line"> }</span><br><span class="line"> 或者</span><br><span class="line"> /deep/ .searchContainer{</span><br><span class="line"> width: 100%;</span><br><span class="line"> }</span><br></pre></td></tr></table></figure>
<h3 id="31-git"><a href="#31-git" class="headerlink" title="31-git"></a>31-git</h3><p>git用户名：www</p>
<p>pwd:wwy7***.0</p>
<p>提交代码</p>
<p><a target="_blank" rel="noopener" href="https://blog.csdn.net/weixin_44256848/article/details/123812716">https://blog.csdn.net/weixin_44256848/article/details/123812716</a></p>
<p>git pull<br>git add .<br>git commit -m ‘描述’<br>git push</p>
<p>更新代码</p>
<p><strong>git stash</strong> </p>
<p><strong>git fetch –all</strong></p>
<p><strong>git pull</strong></p>
<p><a target="_blank" rel="noopener" href="https://www.cnblogs.com/congcongerhuo/p/16810726.html">https://www.cnblogs.com/congcongerhuo/p/16810726.html</a></p>
<p>第一次拉取代码</p>
<p>git init</p>
<p>git remote add origin <a target="_blank" rel="noopener" href="http://10.143.132.221:18090/wjm/edu-cloud-vue-app.git">http://10.143.132.221:18090/wjm/edu-cloud-vue-app.git</a></p>
<p>git fetch origin dev</p>
<p>git checkout -b dev origin/dev</p>
<p>git pull origin dev</p>
<hr>
<p>首先，操作之前一定要看清分支！！</p>
<p>其次，提交代码之前一定要先更新代码！！</p>
<p>git branch —–查看当前分支</p>
<p>git pull —–更新代码到本地 </p>
<p>提交代码：</p>
<p>1、在本地修改相应文件（或者文件新旧替换）</p>
<p>2、git add <strong>/</strong>/文件名 （文件修改路径）</p>
<p>（注意路径要写对）</p>
<p>3、git status —-查看当前本地文件信息</p>
<p>4、 git commit -m “更改信息备注”</p>
<p>5、git push ——–提交代码到当前分支</p>
<p>（我一般git push 之前会看一下commit状态：git status）</p>
<p>到此Git提交代码就完成啦！</p>
<p>git 报错</p>
<p>1.执行 git pull 时：.error: Your local changes to the following files would be overwritten by merge:….php<br>Please, commit your changes or stash them before you can merge.</p>
<h3 id="32-图片填充"><a href="#32-图片填充" class="headerlink" title="32-图片填充"></a>32-图片填充</h3><figure class="highlight css"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line"><span class="attribute">object-fit</span>:cover</span><br></pre></td></tr></table></figure>
<h3 id="33-video"><a href="#33-video" class="headerlink" title="33-video"></a>33-video</h3><figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br></pre></td><td class="code"><pre><span class="line"><span class="attr">video</span>::-webkit-media-controls-fullscreen-button {</span><br><span class="line"> <span class="attr">display</span>: none</span><br><span class="line">}</span><br><span class="line"></span><br><span class="line"><span class="attr">video</span>::-webkit-media-controls-mute-button {</span><br><span class="line"> <span class="attr">display</span>: none</span><br><span class="line">}</span><br><span class="line"><span class="attr">video</span>::-webkit-media-controls-volume-slider {</span><br><span class="line"> <span class="attr">display</span>: none</span><br><span class="line">}</span><br><span class="line"><span class="attr">video</span>::-internal-media-controls-overflow-button{</span><br><span class="line"> <span class="attr">display</span>: none</span><br><span class="line">}</span><br><span class="line"><span class="attr">video</span>::-webkit-media-controls-toggle-closed-captions-button {</span><br><span class="line"> <span class="attr">display</span>: none;</span><br><span class="line">}</span><br><span class="line"><span class="attr">video</span>:-webkit-media-controls-volume-control-container{</span><br><span class="line"> <span class="attr">display</span>: none;</span><br><span class="line">}</span><br><span class="line"></span><br><span class="line"><video :src=<span class="string">"videoFlagUrl"</span> controls </span><br><span class="line"> controlslist=<span class="string">"nodownload nofullscreen noremoteplayback noplaybackrate"</span></span><br><span class="line"> disablePictureInPicture></span><br><span class="line"></video></span><br></pre></td></tr></table></figure>
<h3 id="34-轮播图-echarts图"><a href="#34-轮播图-echarts图" class="headerlink" title="34-轮播图+echarts图"></a>34-轮播图+echarts图</h3><p> echarts图表隐藏之后再展示出现变形</p>
<p><strong>解决方法：</strong></p>
<ol>
<li></li>
</ol>
<figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br></pre></td><td class="code"><pre><span class="line">var dom = document.getElementById( "jindu" );</span><br><span class="line">var myChart = echarts.init(dom);</span><br><span class="line">option = {</span><br><span class="line"> </span><br><span class="line">}</span><br><span class="line">myChart.setOption(option);</span><br><span class="line">$(window).resize(myChart.resize);</span><br></pre></td></tr></table></figure>
<p>2.在图表要显示的地方添加代码：$(window).trigger(‘resize’);</p>
<h3 id="35-grid布局基本使用"><a href="#35-grid布局基本使用" class="headerlink" title="35-grid布局基本使用"></a>35-grid布局基本使用</h3><figure class="highlight css"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br></pre></td><td class="code"><pre><span class="line"><span class="attribute">display</span>: grid;</span><br><span class="line"><span class="attribute">grid-template-columns</span>: <span class="built_in">repeat</span>(<span class="number">4</span>, <span class="number">24%</span>);</span><br><span class="line"><span class="attribute">grid-row</span>-<span class="attribute">gap</span>: .<span class="number">15rem</span>;//行间隔</span><br><span class="line"><span class="attribute">grid-column</span>-<span class="attribute">gap</span>: <span class="number">1%</span>;//列间隔</span><br><span class="line">place-items: center center;</span><br></pre></td></tr></table></figure>
<h3 id="36-vant-list-注意事项"><a href="#36-vant-list-注意事项" class="headerlink" title="36-vant list 注意事项"></a>36-vant list 注意事项</h3><p>如果没有加载完 就切换tab 不会触发重新加载</p>
<figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br></pre></td><td class="code"><pre><span class="line">解决办法(切换时间为例)：$nextTick</span><br><span class="line"><span class="title function_">changetime</span>(<span class="params"></span>) {</span><br><span class="line"> <span class="variable language_">this</span>.<span class="property">finished</span> = <span class="literal">true</span></span><br><span class="line"> <span class="variable language_">this</span>.$nextTick(<span class="function">()=></span>{</span><br><span class="line"> <span class="comment">// 重新加载数据 </span></span><br><span class="line"> <span class="variable language_">this</span>.<span class="title function_">onLoad</span>()</span><br><span class="line"> })</span><br><span class="line">}</span><br><span class="line"></span><br></pre></td></tr></table></figure>
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<h2 id="Quick-Start"><a href="#Quick-Start" class="headerlink" title="Quick Start"></a>Quick Start</h2><h3 id="Create-a-new-post"><a href="#Create-a-new-post" class="headerlink" title="Create a new post"></a>Create a new post</h3><figure class="highlight bash"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">$ hexo new <span class="string">"My New Post"</span></span><br></pre></td></tr></table></figure>
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<h3 id="Deploy-to-remote-sites"><a href="#Deploy-to-remote-sites" class="headerlink" title="Deploy to remote sites"></a>Deploy to remote sites</h3><figure class="highlight bash"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">$ hexo deploy</span><br></pre></td></tr></table></figure>
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