JavaScript Interview Questions

Q21 What is the difference between function declaration and expression? ✓ Answered → Q22 What are arrow functions? ✓ Answered → Q23 What is a module in JavaScript? ✓ Answered → Q24 Explain ES6 features. ✓ Answered → Q25 What is JSON and how does parsing work? ✓ Answered → Q26 What is localStorage and sessionStorage? ✓ Answered → Q27 What is a shallow copy vs deep copy? ✓ Answered → Q28 What is optional chaining? ✓ Answered → Q29 What is nullish coalescing? ✓ Answered → Q30 What are template literals? ✓ Answered → Q31 What is strict mode? ✓ Answered → Q32 What are JavaScript data types? ✓ Answered → Q33 What is type coercion? ✓ Answered → Q34 What are Immediately Invoked Function Expressions (IIFE)? ✓ Answered → Q35 What is garbage collection in JavaScript? ✓ Answered → Q36 What is memoization? ✓ Answered → Q37 What is the difference between call, apply, and bind? ✓ Answered → Q38 What is Object.freeze()? ✓ Answered → Q39 What is Object.seal()? ✓ Answered → Q40 Explain Set and Map. ✓ Answered →