Using ajax in filter or search

Assume we have a form:
     <form id="filterForm">
            <input type="button" id='FilterButton' value="Filter" />
      </form>
We we click the Filter button
$(document).ready(function(){
    $('#FilterButton').click(function(){
            submitFilter();
    });

}
 submiteFilter function using ajax
function submitFilter(){
    $.post('handlesubmit.php', $("form#filterForm").serialize(), function(data) {
                formatJson(data, 'div.ajax_list', setDefaultContent);
         });
}

function setDefaultContent is used to handle the data from ajax post.
function setDefaultContent(formattedJson){

}