注意：**1.左边读取的字段，右手边必须有
     2.读取的是右边的一个层级**

    1.                 var obj = {
    2.             name:"lisi",age:18,skill:"vue",
    3.             s:{
    4.                 sex:"male"
    5.             }
    6.         }
    7.         /* 
    8.         var name = obj.name
    9.         var age = obj.age
    10.         var skill = obj.skill
    11.         */
    12.         var {name,s} = obj
    14.         console.log(name);
    15.         console.log(s.sex);

    例子

    1.         var obj = [
    2.             {name:"zheng",age:18,skill:"vue"},
    3.             {name:"zhang",age:17,skill:"js"},
    4.             {name:"liu",age:20,skill:"html"}
    5.         ]
    6.         /* arr = [{name:"xx",skill:"xxx"},{name:"xx",skill:"xxx"}] */
    7.         var arr = []
    8.         for(var i=0;i<obj.length;i++){
    9.             /* var name = obj[i].name;
    10.             var skill = obj[i].skill; */
    11.             var {name,skill} = obj[i]
    12.             arr.push({
    13.                 /* name:name,skill:skill */
    14.                 name,
    15.                 skill
    16.             })
    17.         }
    18.         console.log(arr);