How to compare two date values with jQuery [duplicate]

Question

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> 

Answer 1

var startDt=document.getElementById("startDateId").value; var endDt=document.getElementById("endDateId").value;  if( (new Date(startDt).getTime() > new Date(endDt).getTime())) {     ---------------------------------- } 

Answer 2

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 >