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framer-motion-layout

该 Skill 提供 Framer Motion 布局动画参考,涵盖 layout 属性、layoutId 共享元素过渡、AnimatePresence 退出动画、可排序列表和网格布局,并包含 JSX 示例、模式说明与注意事项,适合 React 前端开发时查阅。

分类:开发
C-Jeril
热度 0.00
最近更新 2026-11-01 23:26:54

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Metadata
name
framer-motion-layout
description
Official Framer Motion skill for layout animations — shared layout transitions, layoutId, exit animations, AnimatePresence. Use when building shared element transitions, layout animations, reorderable lists, or when asking about Framer Motion layout, layoutId, or shared transitions.
license
MIT

Framer Motion Layout Animations

When to Use This Skill

Apply when implementing shared element transitions, layout animations for reordering, or coordinated mount/unmount animations. When the user asks about Framer Motion layout animations, layoutId, or AnimatePresence.

Related skills: For core animation use framer-motion-core; for variants use framer-motion-variants; for React integration use framer-motion-react.

Layout Prop

The layout prop enables automatic position animations when layout changes:

<motion.div layout>
  {items.map(item => (
    <motion.div key={item.id} layout />
  ))}
</motion.div>

Layout Modes

Mode Behavior
true Animate position and size
"position" Animate only position
"size" Animate only size
<motion.div layout="position" />
<motion.div layout="size" />

layoutId for Shared Element Transitions

layoutId enables smooth transitions between elements in different components:

Page Transitions

// Page A
function CardA() {
  return <motion.div layoutId="card" />;
}

// Page B
function CardB() {
  return <motion.div layoutId="card" />;
}

When CardA unmounts and CardB mounts with the same layoutId, Framer Motion animates the element smoothly between positions.

Modal Overlays

function ListItem({ item, onClick }) {
  return (
    <motion.div layoutId={`item-${item.id}`} onClick={onClick}>
      {item.name}
    </motion.div>
  );
}

function Modal({ item }) {
  return (
    <motion.div layoutId={`item-${item.id}`}>
      <h2>{item.name}</h2>
      <p>{item.description}</p>
    </motion.div>
  );
}

AnimatePresence for Layout

AnimatePresence enables exit animations:

import { AnimatePresence, motion } from "framer-motion";

function TodoList({ todos }) {
  return (
    <motion.ul>
      <AnimatePresence>
        {todos.map(todo => (
          <motion.li
            key={todo.id}
            layout
            initial={{ opacity: 0, x: -20 }}
            animate={{ opacity: 1, x: 0 }}
            exit={{ opacity: 0, x: 20 }}
          />
        ))}
      </AnimatePresence>
    </motion.ul>
  );
}

AnimatePresence Modes

<AnimatePresence mode="wait">
  {isOpen && <Modal key="modal" />}
</AnimatePresence>
Mode Description
"sync" All animations run simultaneously (default)
"wait" Exit completes before enter starts
"popLayout" Exiting element removed from layout immediately

Reorderable Lists

Combine layout with drag for reorderable lists:

function ReorderableList({ items, setItems }) {
  return (
    <AnimatePresence>
      {items.map(item => (
        <motion.div
          key={item.id}
          layout
          drag
          dragConstraints={{ top: 0, bottom: 0 }}
          onDragEnd={({ info, target }) => {
            // Calculate new index and update
          }}
          initial={{ opacity: 0, scale: 0.8 }}
          animate={{ opacity: 1, scale: 1 }}
          exit={{ opacity: 0, scale: 0.8 }}
        />
      ))}
    </AnimatePresence>
  );
}

Shared Layout with Grid

function Grid({ items }) {
  return (
    <motion.div
      layout
      style={{
        display: "grid",
        gridTemplateColumns: "repeat(auto-fill, minmax(100px, 1fr))",
        gap: 10
      }}
    >
      {items.map(item => (
        <motion.div
          key={item.id}
          layout
          style={{
            width: "100%",
            aspectRatio: 1,
            backgroundColor: item.color
          }}
        />
      ))}
    </motion.div>
  );
}

Exit Animations

Elements must have exit states for AnimatePresence:

<motion.div
  initial={{ opacity: 0, scale: 0 }}
  animate={{ opacity: 1, scale: 1 }}
  exit={{ opacity: 0, scale: 0 }}
/>

Exit with layout

<motion.div
  layout
  exit={{ opacity: 0, x: -100, transition: { duration: 0.3 } }}
/>

Crossfade with layoutId

When multiple elements share a layoutId at the same level:

function Toggle() {
  const [showA, setShowA] = useState(true);

  return (
    <AnimatePresence mode="popLayout">
      {showA ? (
        <motion.div
          key="a"
          layoutId="shape"
          style={{ backgroundColor: "red" }}
        />
      ) : (
        <motion.div
          key="b"
          layoutId="shape"
          style={{ backgroundColor: "blue", borderRadius: "50%" }}
        />
      )}
    </AnimatePresence>
  );
}

The element smoothly morphs between states including border radius.

Best practices

  • ✅ Use layoutId for shared element transitions between routes/pages.
  • ✅ Wrap animated lists with AnimatePresence for exit animations.
  • ✅ Use layout prop for automatic position animations.
  • ✅ Use AnimatePresence mode="popLayout" for smooth reordering.
  • ✅ Define exit states for components using AnimatePresence.
  • ✅ Use layout on parent containers when children need to animate position.

Do Not

  • ❌ Forget to wrap conditionally rendered animated components with AnimatePresence.
  • ❌ Use the same layoutId on multiple elements at the same level.
  • ❌ Forget to define exit states for components that unmount.
  • ❌ Use layout animations without proper keys on children.
  • ❌ Animate too many layout elements simultaneously — group or stagger.

Learn More

https://www.framer.com/motion/layout-animations/ https://www.framer.com/motion/animate-presence/