React

Global state management is one of the most important and most misunderstood concepts in React interviews. Tools such as Redux and the Context API are widely used to manage global state in React applications, yet many developers rely on them without fully understanding the design principles behind their implementation.

If you work in web engineering, the transition into 2026 hasn’t been defined by new features, but by a single, terrifying realization: The boundary between your client and server is broken.

Master your React JS interview. Get instant answers and code for the top 30+ Basic to Advanced React interview questions. Includes Hooks, Context, VDOM, and Fiber.

Custom Hooks are the power tools of modern React development. They allow you to extract component logic like managing state, handling side effects, or interacting with the DOM into reusable functions. By mastering them, you can transform complex components into simple, declarative ones, making your application cleaner, more readable, and highly maintainable.