convert var to date in javascript code example

Example 1: js string to date

var myDate = new Date("2013/1/16");

var str = "2013/1/16";
var strToDate = new Date(str);

Example 2: javascript date format mm/dd/yyyy

var date_format = new Date();

document.write(innerHTML = date_format.getMonth()+'/'+ date_format.getDate()+'/'+date_format.getFullYear());