javascript Map 和对象使用

先说结论，Map使用 for  of   对象使用for   in

const person ={

  name: '张三',

  age: 30,

  city: '北京'

};

const user = {

  id: 1,

  username: 'admin',

  isAdmin: true

};

const user = {   id: 1,   username: 'admin',   isAdmin: true };	User1获取id值 User1.get(“id”); 遍历 For(let[key,value] of user1){   Console.log(`${key}:${value}`); } map用for of遍历，对象用for  in遍历
Const user1 = new Map(Object.entries(user);
const person = {   name: '张三',   age: 30,   city: '北京' };	console.log("Object.keys(person)",Object.keys(person)); console.log("Object.values(person)",Object.values(person)) for(let key in person){                 console.log("key",key);                 console.log(person[key]);             } for(let[key,value] of Object.entries(person)){                 console.log("aaaaaaaa",key,value)             }