[jquery] How to compare two date values with jQuery

I have two String fields which represent Dates in my page and I would like to compare these two fields to know if my first date < second date. How can I do this?

<tr>
    <td align="right">First Date: </td>
    <td align="left"> <html:text name="addPublicationForm" styleId="firstDate" property="firstDate" maxlength="10"/></td>
</tr>
<tr>
    <td align="right">Second Date: </td>
    <td align="left"> <html:text name="addPublicationForm" styleId="secondDate" property="secondDate" maxlength="10"/></td>
</tr>

If you are also using jQuery ui, in particular datepicker, you can use $.datepicker.parseDate(format, string) to turn your date strings into a JavaScript Date object, which you can then compare using the standard < and >

Once you are able to parse those strings into a Date object comparing them is easy (Using the < operator). Parsing the dates will depend on the format. You may take a look at Datejs which might simplify this task.

var startDt=document.getElementById("startDateId").value;
var endDt=document.getElementById("endDateId").value;

if( (new Date(startDt).getTime() > new Date(endDt).getTime()))
{
    ----------------------------------
}

var startDate = $('#start_date').val().replace(/-/g,'/');
var endDate = $('#end_date').val().replace(/-/g,'/');

if(startDate > endDate){
   // do your stuff here...
}

check the solution provided here it may help, i use it in my projects. http://trentrichardson.com/examples/timepicker/ .(in the end of the page)

just use the jQuery datepicker UI library and convert both your strings into date format, then you can easily compare. following link might be useful

https://stackoverflow.com/questions/2974496/jquery-javascript-convert-date-string-to-date

cheers..!!