ES6允许按照一定模式,从数组和对象中提取值,对变量进行赋值,这被称为解构(Destructuring)。
ES6写法
let cat = 'ken'
let dog = 'lili'
let zoo = {cat, dog}
console.log(zoo) //Object {cat: "ken", dog: "lili"}
反过来可以这样写
let dog = {type: 'animal', many: 2}
let { type, many} = dog
console.log(type, many) //animal 2
其实这里我们写习惯了还是可以省很多代码量的,比如从链接里取参数,从react的this.state中取属性