mvvm/index.html at master · poplike/mvvm · 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>Document</title>
</head>

<body>
  <script>
    let obj = {}
    let name = 'jianwei'
    obj.age = 29
    let Body = document.getElementsByTagName('body')[0]
    let Phtml = document.createElement('p')
    Phtml.innerHTML = name
    Body.appendChild(Phtml)
    Object.defineProperty(obj, 'name', {
      // value: '男',
      configurable: true, // 可配置对象，删除属性
      // writable: false, // 可修改对象， 可写 (不允许同一个属性存在两个及以上的存取访问器配置，所以writable或者value不能与get/set同时配置，否则报错。)
      enumerable: true, // 可枚举
      get() {
        return name
      },
      set(val) {
        console.log(val)
        name = val
      }
    })
    // console.log(obj)
    // for (let item in obj) {
    //   console.log(item)
    // }
    obj.name = 'xiaozhen'
    console.log(name)
  </script>
</body>

</html>