数组、对象的批量赋值

数组的批量赋值 

let array = [5,6];
let num1 = array[0]
let num2 = array[1]
console.log(num1,num2)//5,6

//批量赋值
let arr = [5, 6];
let [num1, num2] = arr;
console.log(num1, num2)//5，6

对象的批量赋值

const obj = {
    type:'IT',
    name:'wonu'
}
const {type,name} = obj
console.log(obj)
console.log(type,name)//IT，wonu

key 与value 一样

      const key = 'job';
      const obj = {
        key,
        num: 1,
        str: 'wonu',
        work() {

        },
        [key]: 'fe',
        [key + 'world']: 'fe'
      }
      console.log(obj)