javascript-demo/clickButton.html at master · duzuimoye/javascript-demo · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>点击按钮弹窗</title>
    <style>
         button{
            display: none;
            background-color: red;
            color: #fff;
            font-size: 18px;
            width: 100px;
            height: 50px;
            margin-top:15px;
        }
    </style>
</head>
<body>
    <div>
        <div id="change" onmousemove="show()" onmouseout="hide()">鼠标经过出现按钮</div>
        <button id="button" onclick="addToal()" value="锐雯名言">按钮</button>
    </div>

</body>
<script>
    function addToal() {
        alert('断剑重铸之日 骑士归来之士')
    }
    function show() {
        var obj = document.getElementById('button');
        obj.style.display='block';
        var obj3 = document.getElementById('change');
        obj3.style.backgroundColor = 'red';
        obj3.style.width = '200px';
        obj3.style.height= '100px'
    }
    function hide() {
        var obj2 = document.getElementById('button');
        obj2.style.display = 'none';
        var obj4 = document.getElementById('change');
        obj4.style.backgroundColor = 'white';
    }
</script>
</html>