Days Difference Between 2 dates in JavaScript

Assuming your format is yyyy-MM-dd  where MM starts with 0,The code to find the days difference is as follows

 <script language=javaScript>
function fun1()
{
    var sdt = "2011-03-04";   
    var edt = 2011-04-05;
   
    sYear=sdt.substring(0,4);
    sMonth=parseInt(sdt.substring(5,7))-1;
    sDate=sdt.substring(8,10);
  
    alert(sYear+"::"+sMonth+"::"+sDate)
  
    eYear=edt.substring(0,4);
    eMonth=parseInt(edt.substring(5,7))-1;
    eDate=edt.substring(8,10);
  
    var dt1=new Date()
    dt1.setFullYear(sYear,sMonth,sDate);  //yyyy,mm,date
  
    var dt2=new Date()
    dt2.setFullYear(eYear,eMonth,eDate);

    var milliSecDiff=dt2.getTime() - dt1.getTime();
    var daysDiff=milliSecDiff/(1000*60*60*24);
    alert(daysDiff);
}

</script>