MediaWiki:Common.js

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/* Any JavaScript here will be loaded for all users on every page load. */

// On page load, collapse TOC in Vector 2022 if expanded
(function () {
    const observer = new MutationObserver(() => {
        const toggle = document.querySelector('.vector-toc-toggle');
        const toc = document.querySelector('.vector-toc');

        if (!toggle || !toc) return;

        // Only act if expanded
        if (toggle.getAttribute('aria-expanded') === 'true') {
            toggle.click();

            try {
                localStorage.setItem('vector-toc-expanded', 'false');
                localStorage.setItem('vector-toc-pinned', 'false');
            } catch (e) {}

            observer.disconnect();
        }
    });

    observer.observe(document.body, {
        childList: true,
        subtree: true
    });
})();