How to compare two date values with jQuery [duplicate]

问题

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>

回答1:

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

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

回答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 >

回答3:

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

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

回答4:

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..!!

回答5:

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.

回答6:

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)

来源：https://stackoverflow.com/questions/3004178/how-to-compare-two-date-values-with-jquery

标签

jquery

date

compare