js中实现json格式的转换

function person(id,name,age){
    this.id=id;
    this.name=name;
    this.age=age;
}

var p=new person(1001,'tom',27);

//转换为JSON格式     [{"id":1001,"name":"tom","age":27},{}...{}]
var jsonStr=JSON.stringify(p);

//将JSON格式解析为字符串
var strJson=JSON.parse(jsonStr);

//存储到localStoreage中
localStorage.person=jsonStr;

//从localStorage 中读取对象数据
var ls=localStorage.person;