React and Next.js Frontend Interview Questions and Answers

A focused interview preparation book for frontend developers working with React and Next.js. It covers JavaScript, TypeScript, rendering, state, performance, accessibility, testing, routing, server components, and frontend system design. Read one chapter at a time, answer the questions out loud, then write a short version of each answer. The goal is not to memorize scripts. The goal is to build clear, practical answers that show judgment, implementation skill, and professional communication.