MediaWiki:Common.js

/* Any JavaScript here will be loaded for all users on every page load. */
(function(){
console.log('js test');
( function ( $ , mw ) {
if (mw.config.get('wgNamespaceNumber') === 0) {
var categories = mw.config.get('wgCategories'); // Get the list of categories for the page

        // Check if the page belongs to the desired category
        if (categories && categories.includes('Pages using gadget HexConverter')) {
console.log('yaa');
}
}
})();