MediaWiki:Common.js

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/* Any JavaScript here will be loaded for all users on every page load. */
// Vector 2022: pin main menu for logged-out users on desktop
if (!mw.config.get('wgUserName') && window.matchMedia('(min-width: 1120px)').matches) {
  const observer = new MutationObserver((_, obs) => {
    if (document.documentElement.classList.contains('vector-animations-ready')) {
      const pin = document.querySelector('[data-event-name="pinnable-header.vector-main-menu.pin"]');
      if (pin) pin.click();
      obs.disconnect();
    }
  });
  observer.observe(document.documentElement, { attributes: true, attributeFilter: ['class'] });
}