JavaScript Performance Questions

@qs_by_qset

Created this 7 months ago

Less than 10 submissions

Public

1. What is the difference between == and === in JavaScript?

2. What is hoisting in JavaScript?

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3. What is the difference between a function declaration and a function expression?

4. What is the purpose of the 'use strict' directive?

5. What is the difference between synchronous and asynchronous operations in JavaScript?

6. What is the event loop in JavaScript?

7. What is the difference between a promise and a callback?

8. What is the purpose of the DOM in JavaScript?

9. What is the difference between innerHTML and innerText?

10. What is the purpose of the 'this' keyword in JavaScript?

11. What is the difference between a regular expression and a string literal?

12. What is the purpose of the 'super' keyword in JavaScript?

13. What is the difference between a getter and a setter in JavaScript?

14. What is the purpose of the 'async' and 'await' keywords in JavaScript?

15. What is the difference between a module and a script in JavaScript?

16. What is the purpose of the 'strict mode' in JavaScript?

17. What is the difference between a class and a constructor in JavaScript?

18. What is the purpose of the 'fetch' API in JavaScript?

19. What is the difference between a promise and an observable in JavaScript?

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