JavaScript Reserved Keywords: 64 Terms You Can't Use!

In JavaScript, there are 64 reserved keywords that have special meanings in the language syntax and cannot be used as identifiers (such as variable names, function names, etc.). Here is the list of these reserved keywords:

1. abstract

2. await (only in modules)

3. boolean

4. break

5. byte

6. case

7. catch

8. char

9. class

10. const

11. continue

12. debugger

13. default

14. delete

15. do

16. double

17. else

18. enum

19. export

20. extends

21. false

22. final

23. finally

24. float

25. for

26. function

27. goto

28. if

29. implements

30. import

31. in

32. instanceof

33. int

34. interface

35. let

36. long

37. native

38. new

39. null

40. package

41. private

42. protected

43. public

44. return

45. short

46. static

47. super

48. switch

49. synchronized

50. this

51. throw

52. throws

53. transient

54. true

55. try

56. typeof

57. var

58. void

59. volatile

60. while

61. with

62. yield

Notes:

• Some keywords, like abstract, goto, native, synchronized, and others, are reserved for future use and are not currently implemented in JavaScript.

• await is only reserved within modules.

• The use of these reserved keywords as identifiers will result in syntax errors, so they should be avoided when naming variables, functions, or other entities in your code.