Now vibe coding, so learning hammer FE ?https://channel.meo-ai.comhttps://channel.meo-ai.com/posts/648https://channel.meo-ai.com/posts/648Sat, 30 May 2026 00:02:44 GMT<span class="post-title-source">《CSS 与 JavaScript 动画性能之争》</span><br /><br />标签：<a href="/search/result?q=%23%E5%89%8D%E7%AB%AF" title="#前端">#前端</a> <a href="/search/result?q=%23CSS%E5%8A%A8%E7%94%BB" title="#CSS动画">#CSS动画</a> <a href="/search/result?q=%23JavaScript%E5%8A%A8%E7%94%BB" title="#JavaScript动画">#JavaScript动画</a> <a href="/search/result?q=%23WebAnimationsAPI" title="#WebAnimationsAPI">#WebAnimationsAPI</a> <a href="/search/result?q=%23%E6%80%A7%E8%83%BD%E4%BC%98%E5%8C%96" title="#性能优化">#性能优化</a> <a href="/search/result?q=%23GSAP" title="#GSAP">#GSAP</a> <a href="/search/result?q=%23Motion" title="#Motion">#Motion</a><br /><br />总结：<br />本文通过交互式演示拆解了 CSS 与 JS 动画的性能差异真相：CSS Keyframes 和 Transitions 运行在独立线程，主线程阻塞时依然流畅；而传统 JS 动画（如 requestAnimationFrame 循环）与主线程争抢资源，容易卡顿。但 Motion 库通过底层调用 Web Animations API（WAAPI）绕过了这一限制，实现了与 CSS 同级别的流畅度。作者建议优先使用原生 CSS，遇到 CSS 无法覆盖的场景时选择 Motion 等 WAAPI 方案，而非直接上 GSAP 这类纯主线程库。<br /><br />文章要点：<br />1. CSS 动画的核心优势不是"计算快"，而是运行在独立线程，主线程再忙也不影响动画流畅度<br />2. 传统 JS 动画（requestAnimationFrame）每帧都在主线程计算，React 重渲染或 fetch 解析时容易掉帧<br />3. Motion 库（原 Framer Motion）底层使用 Web Animations API，能接入与 CSS 相同的底层动画引擎，主线程阻塞时照样丝滑<br />4. GSAP 功能极其强大，但坚持在主线程运行，是"能力换性能"的取舍，适合复杂序列动画而非简单过渡<br />5. 现代 CSS 已经很能打，View Transitions、linear()、Animation Timeline 等新 API 大幅减少了必须上 JS 的场景<br />6. 选型建议：能用 CSS 就不用库 → CSS 搞不定优先选 Motion/WAAPI → 只有复杂时间线控制才考虑 GSAP<br /><br />URL：<a href="https://www.joshwcomeau.com/animation/css-vs-javascript/" target="_blank" rel="noopener" title="https://www.joshwcomeau.com/animation/css-vs-javascript/">https://www.joshwcomeau.com/animation/css-vs-javascript/</a><a class="tgme_widget_message_link_preview" href="https://joshwcomeau.com/animation/css-vs-javascript" target="_blank" rel="noopener" title="There are a bunch of JavaScript animation libraries out there, and you might have wondered whether there’s a performance cost compared to traditional CSS transitions and keyframe animations. In this blog post, we’ll compare the same animation across several…"> <div class="link_preview_site_name accent_color">Joshwcomeau</div> <img class="link_preview_image" alt="CSS vs. JavaScript • Josh W. Comeau" src="/static/https://cdn4.telesco.pe/file/j6pHpHOiid85hW-PiHO5RbHQNhUfz8DCzWKspZ6INAOvz1cGOLiCr4icJdVWszb3YD9dLs05A3Hd7EFas5ZsW-R5_tDkwte5eHWsZo06if-Y-ojVVBb0HKR_g1VBbjGnA1nk7Kyp-2o2HK7w6SuzPySg8h20PO-8_JlOyaHI8ygvgqC0LS2hxasm1JN8YYC7N-QeaC7370uBuBtmrggiIKtw04s15QlT-AMhl02e04AH8vKNK16Cz7YPZjODUVKtBj5CVEz9ewIhA6qLKjtE9Rkz7wYZ4b2SmiUD1QH0shZkEmvzzws7oAszCWv_aKZ5rF4-0UBBxvgvcF1jYGDb7g.jpg" width="1200" height="630" loading="eager" /> <div class="link_preview_title">CSS vs. JavaScript • Josh W. Comeau</div> <div class="link_preview_description">There are a bunch of JavaScript animation libraries out there, and you might have wondered whether there’s a performance cost compared to traditional CSS transitions and keyframe animations. In this blog post, we’ll compare the same animation across several…</div> </a>