MediaWiki:Common.js: Difference between revisions

Latest revision as of 20:29, 31 December 2025

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

(function () {
  function slugifyCategory(cat) {
    // Turn category names into a safe CSS class suffix
    return String(cat)
      .trim()
      .toLowerCase()
      .replace(/_/g, '-')
      .replace(/\s+/g, '-')
      .replace(/[^a-z0-9-]/g, '');
  }

  function addCategoryClasses() {
    // MediaWiki provides categories in config on most page views
    const cats = mw.config.get('wgCategories');

    if (!Array.isArray(cats) || !cats.length) {
      console.log("addCategoryClasses, no categories found");
    }

    cats.forEach(function (cat) {
      var slug = slugifyCategory(cat);
      if (slug) document.body.classList.add('cat-' + slug);
    });
  }

  // Run on initial load and after partial page updates
  mw.hook('wikipage.content').add(addCategoryClasses);
})();