WaterDimension.github.io/note.html at main · WaterDimension/WaterDimension.github.io · GitHub

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<!DOCTYPE html>
<html lang="zh-CN">
<head>
  <meta charset="UTF-8" />
  <meta name="viewport" content="width=device-width, initial-scale=1.0" />
  <title>笔记 · frank</title>
  <link rel="stylesheet" href="assets/style.css" />
  <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/highlight.js@11.9.0/styles/atom-one-light.min.css" />
</head>
<body data-page="notes">
  <header class="site-header"></header>

  <main>
    <div class="container">
      <div class="note-shell">
        <aside class="note-toc" id="toc-host">
          <div class="toc-title">目录</div>
          <div id="toc"></div>
        </aside>
        <article class="note-content">
          <a class="note-back" href="notes.html">← 返回笔记列表</a>
          <div class="note-meta" id="meta"></div>
          <h1 id="title">加载中…</h1>
          <div id="body" class="markdown-body"></div>
        </article>
      </div>
    </div>
  </main>

  <footer class="site-footer"></footer>

  <script src="assets/main.js"></script>
  <script src="https://cdn.jsdelivr.net/npm/marked@12.0.2/marked.min.js"></script>
  <script src="https://cdn.jsdelivr.net/npm/dompurify@3.1.6/dist/purify.min.js"></script>
  <script src="https://cdn.jsdelivr.net/npm/highlight.js@11.9.0/lib/common.min.js"></script>
  <script>
    function getId() {
      const u = new URL(location.href);
      return u.searchParams.get("id");
    }

    function buildTOC(container) {
      const toc = document.getElementById("toc");
      const headings = container.querySelectorAll("h2, h3");
      if (headings.length < 2) {
        document.getElementById("toc-host").style.display = "none";
        return;
      }
      const items = [];
      headings.forEach((h, i) => {
        const id = "h-" + i;
        h.id = id;
        items.push(`<a href="#${id}" class="${h.tagName.toLowerCase()}">${escapeHtml(h.textContent)}</a>`);
      });
      toc.innerHTML = items.join("");
      // active section on scroll
      const links = toc.querySelectorAll("a");
      const map = new Map();
      links.forEach(a => map.set(a.getAttribute("href").slice(1), a));
      const obs = new IntersectionObserver(entries => {
        entries.forEach(e => {
          const link = map.get(e.target.id);
          if (!link) return;
          if (e.isIntersecting) {
            links.forEach(l => l.classList.remove("active"));
            link.classList.add("active");
          }
        });
      }, { rootMargin: "-30% 0px -65% 0px" });
      headings.forEach(h => obs.observe(h));
    }

    (async function () {
      const id = getId();
      if (!id) { document.getElementById("title").textContent = "缺少笔记 id"; return; }

      const notes = await loadJSON("data/notes.json");
      const note = notes.find(n => n.id === id);
      if (!note) { document.getElementById("title").textContent = "未找到这篇笔记"; return; }

      document.title = `${note.title} · 笔记 · frank`;
      document.getElementById("title").textContent = note.title;
      document.getElementById("meta").innerHTML = `
        <span class="cat">${escapeHtml(note.category)}</span>
        <span>${note.kind === "md" ? "Markdown" : "HTML"}</span>
        <span>${(note.size / 1024).toFixed(1)} KB</span>
      `;

      const path = `notes/${note.file}`;
      const body = document.getElementById("body");

      if (note.kind === "md") {
        const md = await fetch(path).then(r => r.text());
        marked.setOptions({
          gfm: true,
          breaks: false,
          highlight(code, lang) {
            try {
              if (lang && hljs.getLanguage(lang)) return hljs.highlight(code, { language: lang }).value;
              return hljs.highlightAuto(code).value;
            } catch { return code; }
          },
        });
        const raw = marked.parse(md);
        body.innerHTML = DOMPurify.sanitize(raw, { ADD_ATTR: ["target", "rel"] });
        body.querySelectorAll("pre code").forEach(b => hljs.highlightElement(b));
        // open external links in a new tab
        body.querySelectorAll("a[href^='http']").forEach(a => {
          a.target = "_blank"; a.rel = "noopener";
        });
        buildTOC(body);
      } else {
        // HTML notes were exported with their own external stylesheet (stackedit etc).
        // Render in an iframe to keep their styles intact without conflicting with site styles.
        const iframe = document.createElement("iframe");
        iframe.className = "note-iframe";
        iframe.src = path;
        iframe.title = note.title;
        iframe.loading = "lazy";
        body.appendChild(iframe);
        // Auto-resize the iframe to fit its content height
        iframe.addEventListener("load", () => {
          try {
            const doc = iframe.contentDocument;
            const fit = () => {
              if (!doc || !doc.body) return;
              iframe.style.height = (doc.body.scrollHeight + 40) + "px";
            };
            fit();
            // Re-fit when images load
            doc.querySelectorAll("img").forEach(img => {
              if (!img.complete) img.addEventListener("load", fit);
            });
            // build TOC from inside the iframe
            const headings = doc.querySelectorAll("h2, h3");
            const toc = document.getElementById("toc");
            if (headings.length >= 2) {
              const items = [];
              headings.forEach((h, i) => {
                const id = "ifh-" + i;
                h.id = id;
                items.push(`<a href="javascript:void(0)" data-target="${id}" class="${h.tagName.toLowerCase()}">${escapeHtml(h.textContent)}</a>`);
              });
              toc.innerHTML = items.join("");
              toc.querySelectorAll("a").forEach(a => {
                a.addEventListener("click", () => {
                  const t = doc.getElementById(a.dataset.target);
                  if (!t) return;
                  const top = t.getBoundingClientRect().top + iframe.offsetTop + window.scrollY - 80;
                  window.scrollTo({ top, behavior: "smooth" });
                });
              });
            } else {
              document.getElementById("toc-host").style.display = "none";
            }
            // Make the iframe reflow after font loading / window resize
            window.addEventListener("resize", fit);
          } catch (e) {
            console.warn("iframe TOC build failed", e);
          }
        });
      }
    })();
  </script>
</body>
</html>