Possible Duplicate:
Compare dates with JavaScript
I have two dates, start date and end date. I am comparing them like this:
var fromDate = $("#fromDate").val(); var throughDate = $("#throughDate").val(); if (startdate >= enddate) { alert('start date cannot be greater then end date') } It gives the correct result... the only problem is when I compare the dates 01/01/2013 and 01/01/2014.
How can I correctly compare dates in JavaScript?
You can use this to get the comparison:
if (new Date(startDate) > new Date(endDate)) Using new Date(str) parses the value and converts it to a Date object.
You are comparing strings. You need to convert them to dates first. You can do so by splitting your string and constructing a new Date
new Date(year, month, day [, hour, minute, second, millisecond]) Depending on you date format it would look like
var parts = "01/01/2013".split("/"); var myDate = new Date(parts[2], parts[1] - 1, parts[0]); 
var fromDate = $("#fromDate").val(); var toDate = $("#throughDate").val(); //Detailed check for valid date ranges //if your date is like 09-09-2012 var frommonthfield = fromDate.split("-")[1]; var fromdayfield = fromDate.split("-")[0]; var fromyearfield = fromDate.split("-")[2]; var tomonthfield = toDate.split("-")[1]; var todayfield = toDate.split("-")[0]; var toyearfield = toDate.split("-")[2]; var fromDate = new Date(fromyearfield, frommonthfield-1, fromdayfield); var toDate = new Date(toyearfield, tomonthfield-1, todayfield); if(fromDate.getTime() > today.getTime()){ alert("from Date should be less than today") return; } if(toDate.getTime() > today.getTime()){ alert("to Date should be less than today") return; } if(fromDate.getTime() > toDate.getTime()){ alert("from date should be less than to date") return; } 