var jsonPerson = '{"first_name":"billy", "age":23}'; var personObject = JSON.parse(jsonPerson); //parse json string into JS object
var person={"first_name":"Tony","last_name":"Hawk","age":31}; var personJSONString=JSON.stringify(person);
var objJson1 = JSON.parse(JSON.stringify(objNotJson1));
var obj = JSON.parse("{no:'u',my:'sql'}");//returnes {no:'u',my:'sql'}