compare todays date with calender date (for next seven days only else generate alert ) [closed]

Answer 1

var datePicked = '26-Jun-2012';
var datems = Date.parse(datePicked.replace(/-/g, " "));
var dateNow = new Date();
dateNow.setHours(0,0,0,0);
var msDiff = Math.abs(Number(dateNow) - datems);
// 7 Days = 604 800 000 ms
if(msDiff > 604800000) alert("Time difference greater 7 days");

Answer 2

var mydate = new Date(); //Todays date
txtDate.value='16-Jul-2012'; //date picker date in this format

var newDate = new Date(txtDate.value); //make date object

var difference = Math.ceil((newDate-mydate) / (60*60*24*1000)); //calculate days

if (difference > 7) alert('more than 7 days');

FIDDLE