React is a JavaScript library developed by Facebook for building user interfaces using reusable components and a virtual DOM for efficient rendering.

What are React hooks?

Hooks are functions that allow you to use state and lifecycle features in functional components. Common hooks include useState, useEffect, useContext, and useReducer.

What is the virtual DOM?

The virtual DOM is an in-memory representation of the real DOM. React uses it to determine what changes need to be made and updates only those parts in the actual DOM efficiently.

React.js Interview Questions

391. How would you align React platform investments with long-term business strategy?

392. What engineering principles sustain healthy React ecosystems over time?

393. How would you mentor staff-level engineers on React architectural decision-making?

394. How would you define a long-term roadmap for React platform evolution?

395. What anti-patterns commonly emerge in mature React organizations?

396. How would you prevent frontend platform sprawl across React teams?

397. What governance practices support sustainable React innovation?

398. How would you future-proof React architectures against ecosystem shifts?

399. How would you establish a resilient, scalable, observable, secure, and future-proof React platform architecture for a global engineering organization?