interaction-design

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Interaction Design

交互设计

Create engaging, intuitive interactions through motion, feedback, and thoughtful state transitions that enhance usability and delight users.

通过动效、反馈和精心设计的状态过渡，打造富有吸引力且直观的交互，提升易用性并为用户带来愉悦体验。

When to Use This Skill

适用场景

Adding microinteractions to enhance user feedback
Implementing smooth page and component transitions
Designing loading states and skeleton screens
Creating gesture-based interactions
Building notification and toast systems
Implementing drag-and-drop interfaces
Adding scroll-triggered animations
Designing hover and focus states

添加微交互以增强用户反馈
实现流畅的页面与组件过渡效果
设计加载状态和骨架屏
创建基于手势的交互
构建通知与Toast系统
实现拖拽交互界面
添加滚动触发式动画
设计悬停与聚焦状态

Core Principles

核心原则

1. Purposeful Motion

1. 有意义的动效

Motion should communicate, not decorate:

Feedback: Confirm user actions occurred
Orientation: Show where elements come from/go to
Focus: Direct attention to important changes
Continuity: Maintain context during transitions

动效应传递信息，而非单纯装饰：

反馈：确认用户操作已执行
定位：展示元素的来源与去向
聚焦：引导用户关注重要变化
连贯性：在过渡过程中保持上下文

2. Timing Guidelines

2. 时长规范

Duration	Use Case
100-150ms	Micro-feedback (hovers, clicks)
200-300ms	Small transitions (toggles, dropdowns)
300-500ms	Medium transitions (modals, page changes)
500ms+	Complex choreographed animations

时长范围	适用场景
100-150ms	微型反馈（悬停、点击）
200-300ms	小型过渡（开关、下拉菜单）
300-500ms	中型过渡（模态框、页面切换）
500ms以上	复杂编排式动画

3. Easing Functions

3. 缓动函数

css

/* Common easings */
--ease-out: cubic-bezier(0.16, 1, 0.3, 1); /* Decelerate - entering */
--ease-in: cubic-bezier(0.55, 0, 1, 0.45); /* Accelerate - exiting */
--ease-in-out: cubic-bezier(0.65, 0, 0.35, 1); /* Both - moving between */
--spring: cubic-bezier(0.34, 1.56, 0.64, 1); /* Overshoot - playful */

css

/* Common easings */
--ease-out: cubic-bezier(0.16, 1, 0.3, 1); /* Decelerate - entering */
--ease-in: cubic-bezier(0.55, 0, 1, 0.45); /* Accelerate - exiting */
--ease-in-out: cubic-bezier(0.65, 0, 0.35, 1); /* Both - moving between */
--spring: cubic-bezier(0.34, 1.56, 0.64, 1); /* Overshoot - playful */

Quick Start: Button Microinteraction

快速入门：按钮微交互

tsx

import { motion } from "framer-motion";

export function InteractiveButton({ children, onClick }) {
  return (
    <motion.button
      onClick={onClick}
      whileHover={{ scale: 1.02 }}
      whileTap={{ scale: 0.98 }}
      transition={{ type: "spring", stiffness: 400, damping: 17 }}
      className="px-4 py-2 bg-blue-600 text-white rounded-lg"
    >
      {children}
    </motion.button>
  );
}

tsx

import { motion } from "framer-motion";

export function InteractiveButton({ children, onClick }) {
  return (
    <motion.button
      onClick={onClick}
      whileHover={{ scale: 1.02 }}
      whileTap={{ scale: 0.98 }}
      transition={{ type: "spring", stiffness: 400, damping: 17 }}
      className="px-4 py-2 bg-blue-600 text-white rounded-lg"
    >
      {children}
    </motion.button>
  );
}

Interaction Patterns

交互模式

1. Loading States

1. 加载状态

Skeleton Screens: Preserve layout while loading

tsx

function CardSkeleton() {
  return (
    <div className="animate-pulse">
      <div className="h-48 bg-gray-200 rounded-lg" />
      <div className="mt-4 h-4 bg-gray-200 rounded w-3/4" />
      <div className="mt-2 h-4 bg-gray-200 rounded w-1/2" />
    </div>
  );
}

Progress Indicators: Show determinate progress

tsx

function ProgressBar({ progress }: { progress: number }) {
  return (
    <div className="h-2 bg-gray-200 rounded-full overflow-hidden">
      <motion.div
        className="h-full bg-blue-600"
        initial={{ width: 0 }}
        animate={{ width: `${progress}%` }}
        transition={{ ease: "easeOut" }}
      />
    </div>
  );
}

骨架屏：加载时保留页面布局

tsx

function CardSkeleton() {
  return (
    <div className="animate-pulse">
      <div className="h-48 bg-gray-200 rounded-lg" />
      <div className="mt-4 h-4 bg-gray-200 rounded w-3/4" />
      <div className="mt-2 h-4 bg-gray-200 rounded w-1/2" />
    </div>
  );
}

进度指示器：展示明确的进度

tsx

function ProgressBar({ progress }: { progress: number }) {
  return (
    <div className="h-2 bg-gray-200 rounded-full overflow-hidden">
      <motion.div
        className="h-full bg-blue-600"
        initial={{ width: 0 }}
        animate={{ width: `${progress}%` }}
        transition={{ ease: "easeOut" }}
      />
    </div>
  );
}

2. State Transitions

2. 状态过渡

Toggle with smooth transition:

tsx

function Toggle({ checked, onChange }) {
  return (
    <button
      role="switch"
      aria-checked={checked}
      onClick={() => onChange(!checked)}
      className={`
        relative w-12 h-6 rounded-full transition-colors duration-200
        ${checked ? "bg-blue-600" : "bg-gray-300"}
      `}
    >
      <motion.span
        className="absolute top-1 left-1 w-4 h-4 bg-white rounded-full shadow"
        animate={{ x: checked ? 24 : 0 }}
        transition={{ type: "spring", stiffness: 500, damping: 30 }}
      />
    </button>
  );
}

带平滑过渡的开关:

tsx

function Toggle({ checked, onChange }) {
  return (
    <button
      role="switch"
      aria-checked={checked}
      onClick={() => onChange(!checked)}
      className={`
        relative w-12 h-6 rounded-full transition-colors duration-200
        ${checked ? "bg-blue-600" : "bg-gray-300"}
      `}
    >
      <motion.span
        className="absolute top-1 left-1 w-4 h-4 bg-white rounded-full shadow"
        animate={{ x: checked ? 24 : 0 }}
        transition={{ type: "spring", stiffness: 500, damping: 30 }}
      />
    </button>
  );
}

3. Page Transitions

3. 页面过渡

Framer Motion layout animations:

tsx

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

function PageTransition({ children, key }) {
  return (
    <AnimatePresence mode="wait">
      <motion.div
        key={key}
        initial={{ opacity: 0, y: 20 }}
        animate={{ opacity: 1, y: 0 }}
        exit={{ opacity: 0, y: -20 }}
        transition={{ duration: 0.3 }}
      >
        {children}
      </motion.div>
    </AnimatePresence>
  );
}

Framer Motion 布局动画:

tsx

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

function PageTransition({ children, key }) {
  return (
    <AnimatePresence mode="wait">
      <motion.div
        key={key}
        initial={{ opacity: 0, y: 20 }}
        animate={{ opacity: 1, y: 0 }}
        exit={{ opacity: 0, y: -20 }}
        transition={{ duration: 0.3 }}
      >
        {children}
      </motion.div>
    </AnimatePresence>
  );
}

4. Feedback Patterns

4. 反馈模式

Ripple effect on click:

tsx

function RippleButton({ children, onClick }) {
  const [ripples, setRipples] = useState([]);

  const handleClick = (e) => {
    const rect = e.currentTarget.getBoundingClientRect();
    const ripple = {
      x: e.clientX - rect.left,
      y: e.clientY - rect.top,
      id: Date.now(),
    };
    setRipples((prev) => [...prev, ripple]);
    setTimeout(() => {
      setRipples((prev) => prev.filter((r) => r.id !== ripple.id));
    }, 600);
    onClick?.(e);
  };

  return (
    <button onClick={handleClick} className="relative overflow-hidden">
      {children}
      {ripples.map((ripple) => (
        <span
          key={ripple.id}
          className="absolute bg-white/30 rounded-full animate-ripple"
          style={{ left: ripple.x, top: ripple.y }}
        />
      ))}
    </button>
  );
}

点击涟漪效果:

tsx

function RippleButton({ children, onClick }) {
  const [ripples, setRipples] = useState([]);

  const handleClick = (e) => {
    const rect = e.currentTarget.getBoundingClientRect();
    const ripple = {
      x: e.clientX - rect.left,
      y: e.clientY - rect.top,
      id: Date.now(),
    };
    setRipples((prev) => [...prev, ripple]);
    setTimeout(() => {
      setRipples((prev) => prev.filter((r) => r.id !== ripple.id));
    }, 600);
    onClick?.(e);
  };

  return (
    <button onClick={handleClick} className="relative overflow-hidden">
      {children}
      {ripples.map((ripple) => (
        <span
          key={ripple.id}
          className="absolute bg-white/30 rounded-full animate-ripple"
          style={{ left: ripple.x, top: ripple.y }}
        />
      ))}
    </button>
  );
}

5. Gesture Interactions

5. 手势交互

Swipe to dismiss:

tsx

function SwipeCard({ children, onDismiss }) {
  return (
    <motion.div
      drag="x"
      dragConstraints={{ left: 0, right: 0 }}
      onDragEnd={(_, info) => {
        if (Math.abs(info.offset.x) > 100) {
          onDismiss();
        }
      }}
      className="cursor-grab active:cursor-grabbing"
    >
      {children}
    </motion.div>
  );
}

滑动关闭:

tsx

function SwipeCard({ children, onDismiss }) {
  return (
    <motion.div
      drag="x"
      dragConstraints={{ left: 0, right: 0 }}
      onDragEnd={(_, info) => {
        if (Math.abs(info.offset.x) > 100) {
          onDismiss();
        }
      }}
      className="cursor-grab active:cursor-grabbing"
    >
      {children}
    </motion.div>
  );
}

CSS Animation Patterns

CSS动画模式

Keyframe Animations

关键帧动画

css

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.animate-fadeIn {
  animation: fadeIn 0.3s ease-out;
}
.animate-pulse {
  animation: pulse 2s ease-in-out infinite;
}
.animate-spin {
  animation: spin 1s linear infinite;
}

css

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.animate-fadeIn {
  animation: fadeIn 0.3s ease-out;
}
.animate-pulse {
  animation: pulse 2s ease-in-out infinite;
}
.animate-spin {
  animation: spin 1s linear infinite;
}

CSS Transitions

CSS过渡

css

.card {
  transition:
    transform 0.2s ease-out,
    box-shadow 0.2s ease-out;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.1);
}

css

.card {
  transition:
    transform 0.2s ease-out,
    box-shadow 0.2s ease-out;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.1);
}

Accessibility Considerations

无障碍设计考量

css

/* Respect user motion preferences */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

tsx

function AnimatedComponent() {
  const prefersReducedMotion = window.matchMedia(
    "(prefers-reduced-motion: reduce)",
  ).matches;

  return (
    <motion.div
      animate={{ opacity: 1 }}
      transition={{ duration: prefersReducedMotion ? 0 : 0.3 }}
    />
  );
}

css

/* Respect user motion preferences */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

tsx

function AnimatedComponent() {
  const prefersReducedMotion = window.matchMedia(
    "(prefers-reduced-motion: reduce)",
  ).matches;

  return (
    <motion.div
      animate={{ opacity: 1 }}
      transition={{ duration: prefersReducedMotion ? 0 : 0.3 }}
    />
  );
}

Best Practices

最佳实践

Performance First: Use
```
transform
```
and
```
opacity
```
for smooth 60fps
Reduce Motion Support: Always respect
```
prefers-reduced-motion
```
Consistent Timing: Use a timing scale across the app
Natural Physics: Prefer spring animations over linear
Interruptible: Allow users to cancel long animations
Progressive Enhancement: Work without JS animations
Test on Devices: Performance varies significantly

性能优先：使用
```
transform
```
和
```
opacity
```
实现60fps流畅动画
支持减少动效：始终尊重
```
prefers-reduced-motion
```
设置
时长统一：在应用中使用统一的时长规范
自然物理效果：优先选择弹簧动画而非线性动画
可中断：允许用户取消长时间动画
渐进式增强：在无JS动画时仍可正常工作
设备测试：不同设备上的性能差异显著

Common Issues

常见问题

Janky Animations: Avoid animating
```
width
```
,
```
height
```
,
```
top
```
,
```
left
```
Over-animation: Too much motion causes fatigue
Blocking Interactions: Never prevent user input during animations
Memory Leaks: Clean up animation listeners on unmount
Flash of Content: Use
```
will-change
```
sparingly for optimization

动画卡顿：避免对
```
width
```
、
```
height
```
、
```
top
```
、
```
left
```
属性执行动画
过度动效：过多动效会导致用户疲劳
阻塞交互：动画过程中绝不能阻止用户输入
内存泄漏：组件卸载时清理动画监听器
内容闪烁：谨慎使用
```
will-change
```
进行优化