lovecoding
/
VIP32


			
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  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
  </head>
  <body>
    <script>
      /**
       * 深拷贝:新值复制旧值得内容，修改新值时看旧值是否发生改变
       * 如果发生不改变就证明是深拷贝。
       * concat、slice、Array.from(),数组结构 一维数组
       * Object.assign、对象解构
       */
      //   var arr1 = [1, 2, 3, 4];
      //   var arr2 = [...arr1];
      //   var arr2 = Array.from(arr1);
      //   var arr2 = arr1.slice();
      //   var arr2 = arr1.concat();
      //   arr2[0] = 12;
      //   console.log(arr1, "arr1");
      //   console.log(arr2, "arr2");

      var obj1 = {
        name: "xhs",
        age: 20,
        address: function () {
          console.log("哈尔滨");
        },
      };

    //   var obj2 = Object.assign({},obj1);
    var obj2 = {...obj1};
      obj2.name = 'xhm';
      console.log(obj1,'obj1');
      console.log(obj2,'obj2');


    </script>
  </body>
</html>