Interview questions with clear answers and runnable code for JavaScript, TypeScript, HTML, CSS, React and Next.js. Includes output-prediction puzzles, coding problems, live-coding walkthroughs and tips for each interview round.
Test your mastery of the JavaScript event loop with 10 predict-the-output code snippets. Practise call stack execution, microtask queues, macrotasks, Promise chaining, and async/await timing with step-by-step traces.
Master JavaScript closures and scope for front-end interviews. Practise 10 concept questions spanning lexical scoping, hoisting, the TDZ, data encapsulation, currying, and React stale closures with verbal answers and runnable code.