JavaScript Interview Questions for Freshers – Nittalks

A brief and beginner-friendly collection of commonly asked JavaScript interview questions for freshers, covering JavaScript basics, ES6 features, functions, variables, scope, closures, DOM manipulation, and asynchronous JavaScript concepts. Ideal for entry-level JavaScript developer interviews, freshers technical rounds, and front-end developer interview preparation.

1. What is JavaScript?
2. Is JavaScript a compiled or interpreted language?
3. What are the features of JavaScript?
4. What are data types in JavaScript?
5. Difference between var, let, and const?
6. What is hoisting in JavaScript?
7. What is scope in JavaScript?
8. What is the difference between global scope and local scope?
9. What is closure?
10. What is the difference between == and ===?
11. What is coercion in JavaScript?
12. What is NaN?
13. What are truthy and falsy values?
14. What is an array in JavaScript?
15. Difference between array and object?
16. What are JavaScript functions?
17. Difference between function declaration and function expression?
18. What is an arrow function?
19. What is callback function?
20. What is higher-order function?
21. What is the event loop?
22. What is synchronous and asynchronous JavaScript?
23. What is a promise?
24. What are promise states?
25. What is async and await?
26. What is setTimeout?
27. What is setInterval?
28. What is DOM?
29. What is DOM manipulation?
30. What is event bubbling?
31. What is event capturing?
32. What is event delegation?
33. What is JSON?
34. Difference between null and undefined?
35. What is localStorage?
36. What is sessionStorage?
37. What is cookies?
38. What is this keyword?
39. What is prototype in JavaScript?
40. What is inheritance in JavaScript?
41. What is destructuring?
42. What is spread operator?
43. What is rest operator?
44. What are template literals?
45. What is ES6?
46. What are JavaScript modules?
47. What is strict mode?
48. What is memory leak?
49. What are common JavaScript errors?
50. What are practical JavaScript tasks asked in interviews?

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