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gsap

Add or debug web animations with GSAP, from entrance effects to scroll-driven sequences. Coordinate timing across multiple elements, adjust motion, and address rendering performance and cleanup when using animations in React.

中文简介正在准备中。当前显示英语简介。

原文查看原文说明

Use when you need to add or debug professional web animations with GSAP (timelines, ScrollTrigger, stagger, transforms) in HTML/CSS/JS/React. Includes patterns for smooth motion, performance, and common pitfalls.

查看安装方法

适用场景

  • Animate a hero section with staggered entrances
  • Build scroll-driven animated sections
  • Coordinate navigation, headings, and buttons
  • Debug animation issues in React

包含的文件(9)

  • SKILL.md3.0 KB
  • demo/assets/page-01-4f5668c5-fc4a-44e0-bc5e-a664189d3c31-800w.jpg52.1 KB
  • demo/assets/page-02-0d868fef-f560-45ca-ab35-5dad4fc29059-800w.webp54.3 KB
  • demo/assets/source-preview.jpg34.3 KB
  • demo/index.html34.5 KB
  • demo/preview.jpg30.7 KB
  • demo/PROMPT.md2.4 KB
  • demo/source.json3.6 KB
  • REFERENCES.md198 B

SKILL.md(原文)

安装前可以查看交给 AI 代理的指令内容。

GSAP (GreenSock) — Web Animation Skill

When to use

  • High-quality UI/motion design: entrances, micro-interactions, page transitions
  • Timeline-based sequences (vs. scattered CSS transitions)
  • Scroll-driven storytelling (with ScrollTrigger)
  • Complex easing, staggering, orchestration across many elements

Key concepts & APIs

  • Tweens:
    • gsap.to(targets, vars)
    • gsap.from(targets, vars)
    • gsap.fromTo(targets, fromVars, toVars)
  • Timelines:
    • const tl = gsap.timeline({ defaults, repeat, yoyo, paused })
    • Chain: tl.to(...).from(...).addLabel('x').add(() => ...)
    • Position parameter: absolute 1.2, relative "+=0.5", overlap "-=0.3", label "intro"
  • Eases: ease: "power2.out", "expo.inOut", "elastic.out(1, 0.3)"
  • Staggers: stagger: 0.05 or { each, from: "start|center|end|random", grid }
  • Performance-friendly properties:
    • Prefer transforms (x, y, scale, rotation) and opacity (autoAlpha)
  • ScrollTrigger (plugin):
    • gsap.registerPlugin(ScrollTrigger)
    • Inline: gsap.to(".box", { scrollTrigger: ".box", x: 500 })
    • Advanced: scrollTrigger: { trigger, start, end, scrub, pin, snap, markers }
    • Standalone: ScrollTrigger.create({ trigger, start, end, onUpdate, onToggle })

Common pitfalls (and fixes)

  • Animating layout properties (top/left/width/height) → jank
    • Use transforms, add will-change: transform, avoid forced reflow.
  • ScrollTrigger “not firing” due to wrong trigger sizing/overflow containers
    • Ensure trigger exists, has height, and check scroll container (nested scrolling needs config).
  • Not cleaning up in SPA/React
    • Use gsap.context() and revert on unmount; kill triggers (ScrollTrigger.getAll().forEach(t => t.kill())) if needed.
  • FOUC / measuring before fonts/images load
    • Initialize after layout is stable; run ScrollTrigger.refresh() after images load.

Quick recipes

1) Hero entrance (stagger)

gsap.from(".hero [data-anim]", {
  y: 24,
  autoAlpha: 0,
  duration: 0.8,
  ease: "power2.out",
  stagger: 0.06,
});

2) Sequenced timeline

const tl = gsap.timeline({ defaults: { ease: "power2.out", duration: 0.6 } });
tl.from(".nav", { y: -20, autoAlpha: 0 })
  .from(".hero-title", { y: 30, autoAlpha: 0 }, "-=0.2")
  .from(".hero-cta", { scale: 0.95, autoAlpha: 0 }, "-=0.2");

3) Scroll-scrub pinned section

gsap.registerPlugin(ScrollTrigger);

gsap.timeline({
  scrollTrigger: {
    trigger: ".story",
    start: "top top",
    end: "+=800",
    scrub: 1,
    pin: true,
  },
}).to(".story .panel", { xPercent: -200 });

What to ask the user (if requirements unclear)

  • Is this a static site or SPA (React/Next/Vue)? Any page transitions?
  • Do we need scroll-driven sections (pin/scrub/snap)?
  • Performance constraints (mobile support, reduced motion)?

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