lovecoding
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VIP24


			
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<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>

<body>
  <script>
    /* var person = {
      name: 'zs',  
      age: 18
    }

    function deepClone(obj){
      var tmp = {}
      for(key in obj){
        tmp[key] = obj[key]
      }
      return tmp
    }
    // console.log(deepClone(person))

    var a = deepClone(person)
    a.name = 'lisi'
    console.log(a)
    console.log(person) */


    var person = {
      name: 'zs',
      age: 18,
      school: {
        address: 'harbin',
        num: 10000
      }
    }
    /* 封装深克隆方法 */
    function deepClone(obj){
      /* 定义一个空的对象 接收深克隆之后的结果 */
      var tmp = {}
      /* 循环对象里面的每一项 循环对象下面的属性 */
      for(key in obj){
        /* 判断当前对象是基本数据类型  还是  引用数据类型 */
        if(typeof (obj[key]) == 'object'){
          /* 如果是引用数据类型  再次调用函数本身 实现深克隆 */
          tmp[key] = deepClone(obj[key])
        } else {
          /* 如果是基本数据类型  可以直接赋值 */
          tmp[key] = obj[key]
        }
      }
      return tmp
    }

    var a = deepClone(person)
    a.school.address = 'shenyang'
    console.log(a)
    console.log(person)
  </script>
</body>

</html>