Javascript – Date and Time information

var YYYY = new Date().getFullYear();
var MM = new Date().getMonth() + 1; 
var DD = new Date().getDate();
var hh = new Date().getHours();
var mm = new Date().getMinutes();
var ss = new Date().getSeconds();

var version = YYYY + “-” + MM +”-” + DD + “_” + hh + “_” + mm + “_” + ss;