用户:Mdtwikibot/首页导航.js

注意：在发布之后，您可能需要清除浏览器缓存才能看到所作出的变更的影响。

• Firefox或Safari：按住Shift的同时单击刷新，或按Ctrl-F5或Ctrl-R（Mac为⌘-R）
• Google Chrome：按Ctrl-Shift-R（Mac为⌘-Shift-R）
• Internet Explorer或Edge：按住Ctrl的同时单击刷新，或按Ctrl-F5
• Opera：按 Ctrl-F5。

/* Append as a separately marked block after sandbox verification. */
(function () {
  mw.hook('wikipage.content').add(function ($content) {
    $content.find('.mdt-home .nav-item').each(function () {
      var item = this, list = item.querySelector('.nav-sub'), row = item.querySelector('.nav-row');
      if (!list || !row || row.querySelector('.nav-toggle')) return;
      var button = document.createElement('button');
      button.type = 'button'; button.className = 'nav-toggle';
      list.id = 'mdt-nav-' + Math.random().toString(36).slice(2);
      var label = row.textContent.trim();
      button.setAttribute('aria-controls', list.id);
      button.setAttribute('aria-expanded', 'false');
      button.setAttribute('aria-label', '展开' + label + '次级导航');
      button.innerHTML = '<span aria-hidden="true">›</span>';
      list.hidden = true; row.appendChild(button);
      button.addEventListener('click', function () {
        var expanded = button.getAttribute('aria-expanded') !== 'true';
        button.setAttribute('aria-expanded', String(expanded));
        button.setAttribute('aria-label', (expanded ? '收起' : '展开') + label + '次级导航');
        list.hidden = !expanded; item.classList.toggle('open', expanded);
      });
    });
  });
}());