Interview Q&A / React

INTERVIEW Q&A · 58 QUESTIONS

React interview questions

Rendering, state, hooks, keys and effects, explained with small examples.

  1. When should you use Context instead of prop drilling or a state management library?

    Pass props when only a few levels need the data. Use Context for values many components read but that change rarely, such as theme, language or the logged-in user. Reach for a state library when shared state is large, updates often, or needs tools like selectors and devtools.

    IntermediateIn-depth3 min read