Map与JSON Conver

function strMapToObj(strMap) {
    let obj = Object.create(null);
    for (let [k,v] of strMap) {
        obj[k] = v;
    }
    return obj;
}

function objToStrMap(obj) {
    let strMap = new Map();
    for (let k of Object.keys(obj)) {
        strMap.set(k, obj[k]);
    }
    return strMap;
}

function strMapToJson(strMap) {
    return JSON.stringify(strMapToObj(strMap));
}

function jsonToStrMap(jsonStr) {
    return objToStrMap(JSON.parse(jsonStr));
}

 let myMap = new Map().set('yes', true).set('no', false);
 console.log(strMapToJson(myMap))

var obj=jsonToStrMap('{"yes":true,"no":false}');
//{"yes":true,"no":false}