Get the number of days between 2 dates using Javascript -

actually code works fine when date on same month had problem when date on different month 30/09/2015 , 01/10/2015 number of days result 2.(sorry bad english)

here's sample code:

var dtelem1 = '30/09/2015'; var dtelem2 = '01/10/2015'; var resultelem = frm.elements['numberofdays']; var oneday = 24*60*60*1000;  var x = dtelem1.value; var y = dtelem2.value; var arr1 = x.split('/'); var arr2 = y.split('/');  var dt1 = new date(); dt1.setfullyear(arr1[2], arr1[1], arr1[0]); var dt2 = new date();  dt2.setfullyear(arr2[2], arr2[1], arr2[0]);  resultelem.value = math.round(math.abs((dt1.gettime() -   dt2.gettime())/(oneday))); 

the date methods count months zero, should substract 1 month number when setting date. explains bug, since end substracting 30th of october 1st of november , october has 31 days.

this give expected result:

dt1.setfullyear(arr1[2], arr1[1] - 1, arr1[0]) dt2.setfullyear(arr2[2], arr2[1] - 1, arr2[0]) 

note don't need create date , set it. can pass same arguments directly constructor:

dt1 = new date(arr1[2], arr1[1] - 1, arr1[0]) dt2 = new date(arr2[2], arr2[1] - 1, arr2[0])