WordPress.org

ajax-extend allows you call functions, a function in one plugin or a function you write or even a core wordpress function, via Ajax, in the easiest way.

Example: The javascript code:

$j.ajax( {
    url : home_url,
    type : 'POST',
    dataType : 'html',
    data : {
        'ajax_extend_mark' : 1, /* this is indispensable if you want ajax-extend to call the function you need. */
        'ajax_extend_action' : 'my_function', /* the function name (a WP core function, or a function in one plugin. any functions loaded by wp()) */
        'name' : 'sunjianle',
    },
    success : function(data, textStatus, errorThron) {
        alert(data);
    }
});

The background PHP code:

function my_function()
{
    $name = $_POST["name"];
    echo "Hello, " . $name;

    global $wpdb;
    $query_sql = "select user_login
                from wp_users
                limit 0,10";
    $users = $wpdb->get_results($wpdb->prepare($query_sql));
    foreach($users as $user){
        echo $users->user_login;
    }
}