Answers for "json.parse in nodejs"

javascript json decode

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

json parse returns object

var str = '[{"UserName":"xxx","Rolename":"yyy"}]'; // your response in a string
    var parsed = JSON.parse(str); // an *array* that contains the user
    var user = parsed[0];         // a simple user
    console.log(user.UserName);   // you'll get xxx
    console.log(user.Rolename);   // you'll get yyy

js string to json

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

parse string javascript

parseFloat("16.5"); // 16.5
parseInt("34.6"); // 34
JSON.parse('{ "name":"John", "age":30, "city":"New York"}'); // {name: "John", age: 30, city: "New York"}