MediaWiki:Common.js

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mw.loader.using('mediawiki.util').then(function () {
  $(function () {

    document.querySelectorAll('.mw-tab-buttons').forEach(group => {
      const buttons = group.querySelectorAll('.mw-tab-btn');

      buttons.forEach(btn => {
        btn.addEventListener('click', function () {
          const tabId = this.dataset.tab;

          // 🔥 Find the nearest container that holds this group
          const container = group.closest('.mw-tab-content') || document;

          // Hide ONLY tabs inside this container
          container.querySelectorAll('.mw-tab-content').forEach(c => {
            c.style.display = 'none';
          });

          container.querySelectorAll('.mw-tab-btn').forEach(b => {
            b.classList.remove('active');
          });

          this.classList.add('active');

          const target = container.querySelector('#' + tabId);
          if (target) target.style.display = 'block';
        });
      });

      // auto open first tab
      if (buttons.length > 0) {
        buttons[0].click();
      }
    });

  });
});