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Audit and fix animation performance issues including layout thrashing, compositor properties, scroll-linked motion, and blur effects. Use when animations stutter, transitions jank, or reviewing CSS/JS animation performance.
默认使用会先检查来源的 Prompt；你也可以切换为直接命令，或下载本地副本。
决定是否安装前，请先阅读 SKILL.md，以及 SkillsMP 当前展示的配套文件。
用 Codex 或 Claude 帮你安装 复制这段 Prompt，粘贴到 Codex、Claude 或其他助手里，让它检查 Skill 页面并帮你完成安装。
直接命令不会经过审查 Prompt；运行前请先检查来源。
npx skills add https://github.com/ChonSong/skill-retriever --skill fixing-motion-performance命令会保持在同一行。复制前请横向滚动并检查完整内容。
想先保存到本地？可下载 SkillsMP 当前能够提供的文件。
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When the user wants to plan, design, or implement an A/B test or experiment, or build a growth experimentation program. Also use when the user mentions "A/B test," "split test," "experiment," "test this change," "variant copy," "multivariate test," "hypothesis," "should I test this,"...
基于 SOC 职业分类
正在显示 SKILL.md
| name | fixing-motion-performance |
| description | Audit and fix animation performance issues including layout thrashing, compositor properties, scroll-linked motion, and blur effects. Use when animations stutter, transitions jank, or reviewing CSS/JS animation performance. |
| risk | unknown |
| source | https://github.com/ibelick/ui-skills/tree/main/skills/fixing-motion-performance |
| source_repo | ibelick/ui-skills |
| source_type | community |
| date_added | "2026-07-01T00:00:00.000Z" |
| license | MIT |
| license_source | https://github.com/ibelick/ui-skills/blob/main/LICENSE |
Use this skill when you need audit and fix animation performance issues including layout thrashing, compositor properties, scroll-linked motion, and blur effects. Use when animations stutter, transitions jank, or reviewing CSS/JS animation performance.
Fix animation performance issues.
/fixing-motion-performance
Apply these constraints to any UI animation work in this conversation.
/fixing-motion-performance <file>
Review the file against all rules below and report:
Do not migrate animation libraries unless explicitly requested. Apply rules within the existing stack.
Reference these guidelines when:
| priority | category | impact |
|---|---|---|
| 1 | never patterns | critical |
| 2 | choose the mechanism | critical |
| 3 | measurement | high |
| 4 | scroll | high |
| 5 | paint | medium-high |
| 6 | layers | medium |
| 7 | blur and filters | medium |
| 8 | view transitions | low |
| 9 | tool boundaries | critical |
/* layout thrashing: animate transform instead of width */
/* before */ .panel { transition: width 0.3s; }
/* after */ .panel { transition: transform 0.3s; }
/* scroll-linked: use scroll-timeline instead of JS */
/* before */ window.addEventListener('scroll', () => el.style.opacity = scrollY / 500)
/* after */ .reveal { animation: fade-in linear; animation-timeline: view(); }
// measurement: batch reads before writes (FLIP)
// before — layout thrash
el.style.left = el.getBoundingClientRect().left + 10 + 'px';
// after — measure once, animate via transform
const first = el.getBoundingClientRect();
el.classList.add('moved');
const last = el.getBoundingClientRect();
el.style.transform = `translateX(${first.left - last.left}px)`;
requestAnimationFrame(() => { el.style.transition = 'transform 0.3s'; el.style.transform = ''; });