解构赋值: 两边的结构一定要相同, 不然那就会报错
1.数组的解构赋值
let [a, b, c] = [1,2,4];
console.log(a, b,c);
2.对象的解构赋值; 结构必须一样, 不然会报错
let obj = [{d, e}, [n1, n2, n3], num, str] = [{d:12, e: 13}, [0,0,0], 33, '字符串'];
console.log(obj);