All Roadmaps Download App

Phase 10 · API Integration

Topics

Error Handling

Part of the Frontend Developer Roadmap.

Summary

Gracefully handling failed API calls — network errors, 4xx/5xx responses, timeouts — instead of leaving the UI stuck or silently broken.

How to Learn This

1Build a consistent error-handling wrapper used across all API calls in a project.
2Show user-friendly error messages, not raw error objects or stack traces.
3Handle the specific case of a 401 unauthorized by redirecting to login.

Previous

Refresh Token

Next

Loading State

More topics in API Integration

REST APIs Axios Fetch Pagination Filtering Sorting Search Authentication JWT Refresh Token Loading State Caching Optimistic UI File Upload Multipart Form

Stuck on this topic? Ask an Insider

Get 1:1 guidance from people who've walked this exact path — free on the InsideEdge app.