ES6 json转map map转json

<script>
    let json = {"name":"ES6","day":"2014","feature":"新特性"};
	//json 2 map
	let map = new Map();
	for(let i in json){
		map.set(i,json[i]);
	}
	console.log(map);
</script>

<script>
	//map 2 json
	let map = new Map();
	map.set("name","ES6");
	map.set("day","2014");
	map.set("feature","新特性");
	let json = {};
	for(let [k,v] of map){
		json[k]=v;
	}
	console.log(json);
</script>