ES6 高效的map

//高效的map
let json={
    name:'nl',
    skill:'web'
};
console.log(json.name);
var map=new Map();
map.set(json,'iam');
console.log(map);
//下面看下set里面设置一对key，value值
map.set('nl',json);
console.log(map);
//map增删查
//get取值
console.log(map.get(json));
console.log(map.get('nl'));
//delete删除特定的值，clear删除全部的值
map.delete(json);
console.log(map);
console.log(map.size);
map.clear();
//has true false查找
console.log(map.has('nl'));
//set get has delete clear size