Javascript Interview Questions & Answers for experienced

  1. What is Javascript
  2. What is Hoisting in Javascript?
  3. What are closures in Javascript?
  4. What’s the difference between let and var?
  5. List out some data types in Javascript?
  6. Is JavaScript a case-sensitive language?
  7. How do you implement inheritance in Javascript?
  8. How do you create new instance in Javascript?
  9. How do you create an object in Javascript?
  10. How do you create an Array in Javascript?
  11. What are callbacks in Javascript?
  12. What are named functions in Javascript?
  13. What are anonymous functions in Javascript?
  14. Explain different scopes of variables in Javascript?
  15. What is the difference between the operators ‘==’ and ‘===’?
  16. What is isNaN function in Javascript?
  17. What is the difference between window and document in Javascript?
  18. How to create an array in Javascript?
  19. How to remove some values from an array in Javascript?
  20. How to split a string with some char in Javascript?
  21. What is the difference between splice and slice in Javascript?
  22. What is the difference between find and filter in javascript?
  23. What is the difference between map and filter in javascript?
  24. What is the difference between java and javascript?
  25. What is the difference between map filter and reduce in javascript?
  26. What is the difference between typescript and javascript?
  27. What are mutable and immutable in javascript?