how to get the computer date and time jquery

1var now = new Date(Date.now());
2var formatted = now.getHours() + ":" + now.getMinutes() + ":" + now.getSeconds();
3// 20:10:58

1var dt = new Date();
2var time = dt.getHours() + ":" + dt.getMinutes() + ":" + dt.getSeconds();
3document.write(time);

1new Date($.now());

1new Date(Date.now())   // Mon Jan 19 2015 20:02:55 GMT-0500 (Eastern Standard Time)
2new Date($.now());     // Mon Jan 19 2015 20:02:55 GMT-0500 (Eastern Standard Time)