1.     <script>
  2.         // 针对json对象
  3.         /* tips:只能获取对象中的第一层属性 */
  4.         var obj ={
  5.             name:"lisi",
  6.             age:19,
  7.             likes:{
  8.                 a:10
  9.             }
  10.         }
  11.         var {name,age,likes} = obj;
  12.         console.log(likes)
  13.     </script>

例子

  1.     <script>
  2.         var arr = [{
  3.                 name: "lisi",
  4.                 age: 18,
  5.                 likes: ["lol", "足球"],
  6.                 alikes: ["音乐", "电影"],
  7.                 sex: "male"
  8.             },
  9.             {
  10.                 name: "王五",
  11.                 age: 17,
  12.                 likes: ["al", "栏球"],
  13.                 alikes: ["防抖", "放到"],
  14.                 sex: "male"
  15.             },
  16.             {
  17.                 name: "张三",
  18.                 age: 165,
  19.                 likes: ["发顺丰", "jf"],
  20.                 alikes: ["音乐9", "10电影"],
  21.                 sex: "male"
  22.             }
  23.         ]
  24.         /*
  25.         [{
  26.              name:"张三",
  27.              age:165,
  28.              likes:["发顺丰","jf","音乐9","10电影"],
  29.         }] 
  30.          */
  31.         var res = [];
  32.         for(var i=0;i<arr.length;i++){
  33.             var {name,age,likes,alikes} = arr[i];
  34.             likes.push(...alikes);
  35.             res.push({
  36.                 name,
  37.                 age,
  38.                 likes
  39.             })
  40.         }
  41.         console.log(res);
  42.     </script>