let json = { name:‘ananiah‘, age:‘18‘ } //效率低 需要遍历json console.log(json.name);
//声明map var map = new Map(); map.set(json,‘web‘); console.log(map) //Map(1) {{…} => "web"} map.set(‘wulala‘,json); console.log(map) //Map(2) {{…} => "web", "wulala" => {…}} //key: "wulala" value: {name: "ananiah", age: "18"}
//map中增加、删除、查找 方法(set get has delete clear ) 属性：size //get 取值 console.log(map.get(json)) //删除 delete map.delete(json) console.log(map) // 删除全部 // map.clear(); //长度 console.log(map.size) //查找 true false console.log(map.has(‘ananiah‘)) //false
ES6-map数据结构，增加、删除、查找 方法(set get has delete clear ) 属性：size
原文：https://www.cnblogs.com/Ananiah/p/11071372.html