js string to json

// Imagine we received this text from a web server:
'{ "name":"John", "age":30, "city":"New York"}'

// To convert text into a JavaScript object, use the JavaScript function JSON.parse():
var obj = JSON.parse('{ "name":"John", "age":30, "city":"New York"}');

// OR
var string = '{ "name":"John", "age":30, "city":"New York"}';
var obj = JSON.parse(string);

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

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

Use the JavaScript function JSON.parse() to convert text into a JavaScript object:
var obj = JSON.parse('{ "name":"John", "age":30, "city":"New York"}');

JSON.parse(jsonToDecode)

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

var as = JSON.parse(jstring);

Use the JavaScript function JSON.parse() to convert text into a JavaScript object:

var obj = JSON.parse('{ "name":"John", "age":30, "city":"New York"}');

str = "firstName:name1, lastName:last1"; // NB: No enclosing ""
obj = eval('({' + str + '})');