If a Script has been enqueued but not registered can I still removed it?

Question

There is a plugin that's conflicting with mine when the user loads the admin pages of my plugin, therefore I want to deregister and remove the conflicting script on these pages.

Here is the code for the conflicting script:-

add_action( 'admin_head', 'function_name' );

function function_name() {
if ( is_admin() ) {
    wp_enqueue_script(
        'script_name',
        plugins_url('/js/some_javascript_file.js', __FILE__ )
    );
}
}   

So In my code I check to see if the user is in our admin pages and if so I try to deregister the script as follows:-

function admin_hc_deregister_conflicts() {
 wp_deregister_script('script_name');
}

add_action('admin_head', array($this,'admin_hc_deregister_conflicts'),11);

The problem is that the script is still being loaded in my admin area causing a lot of problems!

Please can someone advise:-

i) Is it possible to remove a script that has been enqueued but not registered? ii) What can I add to my plugin to remove this script from being loaded in our admin pages so that there are no conflicts?

Thanks in advance!

Answer 1

Yep, it's possible, but you want to use wp_dequeue_script.

Try this:

<?php
function admin_hc_deregister_conflicts()
{
    wp_dequeue_script('script_name');
}

Answer 2

See wp_dequeue_script. Keep in mind that you might be breaking functionality of the offending plugin, which is bad form (even if said plugin is poorly written).

It's up to the end user to decide if a (possibly) badly coded plugin is worth using, and you (however well-intentioned) "fixing" another's plugin through yours might only make yours look bad in the end. Most users don't care why something works or doesn't.