JavaScript method for date difference _javascript tips

The examples in this article describe the way JavaScript asks for a date difference. Share to everyone for your reference, specific as follows:

<script type= "Text/javascript" >
function Daytonow (year, month, date) {
 //The idea is to convert two dates to the time stamp, which is the number of milliseconds, Divided by the number of milliseconds per day. How many days apart
 //js month is from 0, so month to reduce a
 month--;
 Past days
 var tdate = new Date (year, month, date). GetTime ();
 Today
 var tnow = new Date (). GetTime ();
 var longdate = Math.ceil (tnow-tdate)/(1000 * *));
 return longdate;
}
Alert (Daytonow (2009, 4, 5));
</script>

Difference between two date days:

 number of days of the date string, before-after, Sdate1-sdate2 function DateDiff (sDate1, SDate2) {//sdate1 and SDate2 are "2002
  -12-18 "format var adate, oDate1, ODate2, idays;"
  Adate = Sdate1.split ("-");
  oDate1 = new Date (adate[0], adate[1]-1, adate[2]);
  Adate = Sdate2.split ("-");
  ODate2 = new Date (adate[0], adate[1]-1, adate[2]);
  Idays = parseint (Math.Abs (odate1-odate2)/1000/60/60/24);
  if ((Odate1-odate2) < 0) {return-idays;
return idays; }//Two date string of days of difference, before-after, Sdate1-sdate2 function DateDiff2 (sDate1, SDate2) {//sdate1 and SDate2 are "12/18/2011" format var oDate1, ODate2
  , Idays;
  oDate1 = new Date (sDate1);
  ODate2 = new Date (SDATE2);
  var idays = parseint (Math.Abs (odate1-odate2)/1000/60/60/24);
  if ((Odate1-odate2) < 0) {return-idays;
return idays; }

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I hope this article will help you with JavaScript programming.