Function getCover

assets/article-cards.js:902–926

(markdownPath)

  }

  function getCover(markdownPath) {
    if (coverCache.has(markdownPath)) {
      return coverCache.get(markdownPath);
    }

    var request = fetch(markdownPath + '?v=20260531-card-cover', {
      cache: 'force-cache'
    })
      .then(function (response) {
        if (!response.ok) {
          return '';
        }

        return response.text();
      })
      .then(function (markdown) {
        return extractFirstImage(markdown, markdownPath);
      })
      .catch(function () {
        return '';
      });

    coverCache.set(markdownPath, request);
    return request;
  }

  function extractFirstImage(markdown, markdownPath) {
    var imagePattern = /!\[[^\]]*]\(([^)\s]+)(?:\s+["'][^"']*["'])?\)|<img[^>]+src=["']([^"']+)["'][^>]*>/ig;