UI Animation with CSS and JavaScript
Animation Projects
- Button states with hover, active, and focus animations
- Skeletal loading screens for async content
- Modal dialogs with entrance and exit transitions
- Scroll-triggered content reveals and parallax effects
- Animated data charts with staggered transitions
- Drag-and-drop interface with physics-based movement
Weekly Breakdown
Weeks 1-2: CSS Animation Basics
Transitions, keyframes, timing functions. Build a library of reusable micro-interactions.
Weeks 3-4: JavaScript Animation
Web Animations API, requestAnimationFrame, easing libraries. Create complex sequenced animations.
Weeks 5-6: Scroll & Gesture
Intersection Observer, scroll-linked animations, touch gestures. Build interactive scroll experiences.
Weeks 7-8: Performance & Polish
Debugging jank, reducing motion preferences, testing across devices. Optimize all projects for production.
Bad animation is worse than no animation. Spinners that never end, transitions that feel sluggish, effects that trigger motion sickness—we've all encountered these mistakes.
Good animation serves a purpose. It shows state changes, guides attention, provides feedback, and makes interfaces feel responsive. The difference between good and bad often comes down to timing, easing functions, and knowing when to hold back.
You'll learn CSS transitions and animations first—they're hardware-accelerated and perform better than JavaScript for simple effects. Then we move to JavaScript for complex sequenced animations, scroll-triggered effects, and interactive gestures.
We cover the Web Animations API, Intersection Observer for scroll effects, and how to reduce motion for users who prefer it. You'll build loading states, page transitions, interactive micro-interactions, and data visualizations that animate smoothly at 60fps.
Performance matters throughout. You'll learn which properties trigger layout reflow, how to use transform and opacity for better performance, and when to use requestAnimationFrame versus CSS.