JavaScript Interview Questions

Q41 What is WeakMap and WeakSet? ✓ Answered → Q42 What is a generator function? ✓ Answered → Q43 What are iterators? ✓ Answered → Q44 Explain fetch API. ✓ Answered → Q45 What is event delegation? ✓ Answered → Q46 What is DOM manipulation? ✓ Answered → Q47 What is Promise.all()? ✓ Answered → Q48 What is Promise.race()? ✓ Answered → Q49 What is microtask vs macrotask? ✓ Answered → Q50 How does garbage collection work? ✓ Answered → Q51 Explain JavaScript engine architecture. ✓ Answered → Q52 How does V8 engine work? ✓ Answered → Q53 Explain execution context in detail. ✓ Answered → Q54 What is the call stack? ✓ Answered → Q55 How does memory management work internally? ✓ Answered → Q56 Explain prototype chain lookup. ✓ Answered → Q57 How does event loop handle async operations? ✓ Answered → Q58 What is Shadow DOM? ✓ Answered → Q59 Explain custom events. ✓ Answered → Q60 What is Web Workers? ✓ Answered →