对象的结构赋值

var obj = {

  name:"Jack",

  sex:"男",

　age:20,

  wife:{

    name:"Rose",

    sex:"女",

　　 age:18,

  },

}

var {name:a,sex,wife:{name:c,sex}} = obj;

console.log(a) //jack

console.log(c) //rose

console.log(name) //rose

console.log(sex) //女

console.log(x) //20

 

var {sex}=obj;　　//只定义一个时,优先打印最外面的属性值

console.log(sex); //男

嵌套对象的解构赋值,

当有别名时,直接打印别名;

属性名相同时,优先打印最里面{ }内的属性.