从php获取jquery数据

Whenever I use classes and lots of includes with Ajax, my data variable always contains the full HTML of the page and never just the simple response that I echo. What am I missing?

Thanks

Create a separate PHP file that will process your request. That way, only the response data will pass to your ajax.

    <?php    
    if(!empty($_SERVER['HTTP_X_REQUESTED_WITH']) && strtolower($_SERVER['HTTP_X_REQUESTED_WITH']) == 'xmlhttprequest') {
        if(isset($_POST['add_product'])){
            // Add function goes here
        }
        if(isset($_POST['delete_product'])){

            // Delete function goes here
        }
        if(isset($_POST['update_product'])){

            // Update function goes here
        }
    }else{ die('No Direct Access');}
?>