jQuery Forum

You should invert and pad your data-value dates to yyyymmdd format so that you can do comparisons on them:

1. <div class="blocks" data-value="20130101">1</div>
2. <div class="blocks" data-value="20130103">3</div>
3. <div class="blocks" data-value="20130218">13</div>
4. ...

Isotope only accepts a string filter, and none of the standard ones fit your requirements, so you'll need to define your own custom one:

1. $.expr.filters.between = function(element, i, match) {
2.     var values = match[3].split('-');
3.     var value = $(element).data('value');
4.     return value >= values[0] && value <= values[1];
5. }

Then use it like this:

1. $container.isotope({
2.       filter: ':between(' + startDate + '-' + endDate + ')'
3. });

See here for the complete solution.