In the plugin I am working on at the moment I wanted to use Prototype 1.6, but WordPress, currently at least, includes version 1.5. So I set about find out how best to do this.

I could have just included it again, but that didn’t seem like the best idea to me. To have one script overriding an other is unlikely to be efficient.

This is what I came up with. First a check to find out if the version currently included is lower than 1.6. Obviously if a newer version is included I don’t want to remove that as it may cause problems.

If it is then it is de-registered and the version included with the plugin is registered.

There may be an official way of achieving this, but I couldn’t find one.

[php]
if ( $wp_scripts->scripts['prototype']->ver < 1.6 ) {
//replace prototype with version 1.6
wp_deregister_script( 'prototype' );
wp_enqueue_script('prototype', '/wp-content/plugins/plugin-path/prototype.js', NULL , 1.6);
}