Handle JavaScript fundamentals, TypeScript, React 19 and Next.js questions, plus the API side of full-stack roles.
Interview soon? Read the first 3 guides (marked "Start here") first, then the rest.
Closures, hoisting, the event loop and this: the JavaScript basics behind trick questions.
Types, generics and narrowing used in every modern codebase.
Hooks, rendering and React 19 features.
Server Components, caching and routing in the App Router.
Designing the APIs your frontend talks to.
The Git questions every team round includes.