1var person={"first_name":"Tony","last_name":"Hawk","age":31};
2var personJSONString=JSON.stringify(person); 

1var jsonPerson = '{"first_name":"billy", "age":23}';
2var personObject = JSON.parse(jsonPerson); //parse json string into JS object

1JSON.stringify(obj);

1var obj = JSON.parse("{no:'u',my:'sql'}");//returnes {no:'u',my:'sql'}

1<script>
2  // Convert JSON String to JavaScript Object
3  var JSONString = '[{"name":"Jonathan Suh","gender":"male"},{"name":"William Philbin","gender":"male"},{"name":"Allison McKinnery","gender":"female"}]';
4
5  var JSONObject = JSON.parse(JSONString);
6  console.log(JSONObject);      // Dump all data of the Object in the console
7  alert(JSONObject[0]["name"]); // Access Object data
8</script>
9