JavaScript Interview Questions

Q81 Explain event loop phases in Node.js. ✓ Answered → Q82 What is cluster module? ✓ Answered → Q83 What is streams in Node.js? ✓ Answered → Q84 Explain middleware in Node.js. ✓ Answered → Q85 What is rate limiting? ✓ Answered → Q86 How does CORS work? ✓ Answered → Q87 Explain security best practices. ✓ Answered → Q88 What is XSS and how to prevent it? ✓ Answered → Q89 Explain CSRF attack. ✓ Answered → Q90 What is SameSite cookie? ✓ Answered → Q91 Explain JWT authentication. ✓ Answered → Q92 What is advanced caching strategy? ✓ Answered → Q93 How to scale Node.js apps? ✓ Answered → Q94 Explain event-driven architecture. ✓ Answered → Q95 What is backpressure in streams? ✓ Answered → Q96 Explain dependency injection in JavaScript. ✓ Answered → Q97 What is SOLID principles in JS context? ✓ Answered → Q98 Explain design patterns in JavaScript. ✓ Answered → Q99 How does JavaScript handle concurrency? ✓ Answered → Q100 What are best practices for large-scale JS applications? ✓ Answered →