calendar - How to validate From and To dates in JQuery? -



have validate 2 dates in aspx page using ajaxcontroltoolkit calendar extender.
following code:

function datevalidation() {     alert($("#txtfromdup").val() + "\n" + $("#txttodup").val())     var fromdate = date.parse($("#txtfromdup").val());     var todate = date.parse($("#txttodup").val());     alert(fromdate + "\n" + todate);     var timediff = todate - fromdate;     var daysdiff = math.floor(timediff / (1000 * 60 * 60 * 24));     alert(daysdiff);     if (daysdiff > 30) {         alert('from date shouldn\'t less date.');         return false;     } else         return true;  }


its not validating properly.
please me resolve this.

i'd like

var startdate = new date( "2015-07-04");  var enddate = new date( "2015-08-11");  var timediff = math.abs(enddate.gettime() - startdate.gettime());  var diffdays = math.ceil(timediff / (1000 * 3600 * 24));   alert(diffdays);   //pseudo code:    if (diffdays  > 30){       //set timeformat = "30days"       alert('from date shouldn\'t less date.');         }else{       alert('valid.');     }


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