How can I get my div id to reload via ajax and jquery

Answer 1

Try:

function AddNewClient() 
{
    dataToLoad = 'clientID=' + clientID + '&addClient=yes';
    $.ajax({ 
        type: 'post', 
        url: '/clients/controller.php', 
        data: dataToLoad, 
        success: function(html){ 
            $('#clientssidebar').html(html); }, 
        error: function() { 
            alert('An error occured!'); } 
        });
}