React Suspense Guide

React Suspense lets you declaratively handle loading states for async operations. Here's how to use it.

Error Boundaries with Suspense#

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Best Practices#

Fallback Design:
✓ Match fallback to content shape
✓ Use skeleton screens for better UX
✓ Keep fallbacks lightweight
✓ Avoid layout shifts

Boundaries:
✓ Place near async content
✓ Use nested Suspense for granularity
✓ Combine with Error Boundaries
✓ Consider user experience flow

Performance:
✓ Preload critical paths
✓ Use transitions for navigation
✓ Avoid waterfall loading
✓ Cache fetched data

Avoid:
✗ Suspense boundary too high
✗ Missing error handling
✗ Flash of loading states
✗ Over-splitting code

React Suspense provides a declarative way to handle loading states. Use it with lazy loading for code splitting, combine with Error Boundaries for robust error handling, and leverage transitions for smooth navigation. Design fallbacks that match your content structure to minimize layout shifts.

React Suspense Guide

Basic Suspense#

Nested Suspense#

Loading Fallbacks#

Error Boundaries with Suspense#

Data Fetching with Suspense#

SuspenseList (Experimental)#

Transitions with Suspense#

useDeferredValue#

Route-based Code Splitting#

Best Practices#

Conclusion#

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