Learn REACT-TRANSITION-GROUP with Real Code Examples

Fade in/out a component

Slide-down menu transitions

Modal open/close animation

Animate list items on add/remove

Switching pages or tabs with transitions

Ensure timeout values match CSS animation duration

Check classNames alignment with CSS

Make sure keys are unique in TransitionGroup

Verify nodes fully mount/unmount

Check triggering state changes

Use React Testing Library to test mount/unmount

Mock timeouts for predictable animation testing

Disable transitions in test environment

Check classNames applied at each state

Use jest fake timers for animation control

Works in any React environment

Can be optimized by minifiers/bundlers

No special hosting or bundling needed

Works with SSR but animations run only on client

Integrates well with JAMStack deployments

RTG native components (Transition, CSSTransition)

Styled-components for scoped animations

GSAP for JS-driven enhancements

React Router for route transitions

Tailwind CSS for utility transition classes

React Router for page-level animations

GSAP for timeline-powered transitions

Framer Motion as a complementary library

Emotion/Styled-Components for CSS styling

Redux/Context for state-driven transitions

Use TransitionGroup for list automation

Sync timeout with CSS animations

Use SwitchTransition for tab/page swapping

Break animations into reusable CSS classes

Preview animations frequently

Matching timeouts with CSS durations

Coordinating animations across components

Managing rapid mount/unmount changes

Handling SSR compatibility

Debugging missing classNames or keys