解构赋值: - 左右两边结构必须一样 - 声明和赋值不能分开 ## 1.数组的解构 ~~~ let arr=[1,2,3]; let [a,b,c] = arr; console.log(a); console.log(b); console.log(c); ~~~ ## 2.对象的解构 ~~~ let {a,b}={a:12,b:24}; console.log(a); console.log(b); ~~~