I would like to customize some form elements in my WP admin area: starting from this example (http://api.jquery.com/val/ the one with the select) what I would liko to do, is to update a via a select field. In order to do so I started including this function:

function my_enqueue() {

    wp_enqueue_script( 'my_custom_script', get_template_directory_uri() . '/js/admin.js' );
add_action( 'admin_enqueue_scripts', 'my_enqueue' );

Inside "admin.js" I placed:

alert("It works!");

And it does work. But whenever I try to include anything related to jQuery nothing happens: the code is being included inside the page and I get no errors in Firebug. For example a script as simple as the one you can find at http://www.w3schools.com/jquery/event_keyup.asp


Doesn't work. Nothing happens. So I wonder, what am i missing or doing wrong? Thansk a lot!

  • Do you have the code wrapped in document ready wrappers? Have you made sure to support "$"? What is the full code of admin.js?
    – Jake
    Sep 16, 2013 at 16:54

1 Answer 1


I am not sure this is your problem if you are not getting any errors, but make sure you have your jQuery code within document ready wrappers and pass the $ in to make sure you can access it since Wordpress runs in no-conflict mode.

jQuery(document).ready(function($) {



It would also be good to declare jQuery as a dependency just to be safe.

wp_enqueue_script( 'my_custom_script', get_template_directory_uri() . '/js/admin.js', array( 'jquery' ) );

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