MediaWiki:Common.js

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/* Any JavaScript here will be loaded for all users on every page load. */
$(document).ready(function () {
    if (mw.config.get('skin') === 'vector') {
        mw.loader.using('mediawiki.util', function () {
            var sidebar = $('#mw-panel');
            if (sidebar.length && !sidebar.hasClass('mw-sidebar-visible')) {
                sidebar.addClass('mw-sidebar-visible');
            }
        });
    }
});