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Top Frontend JavaScript Interview Questions | Ace Your Next Job Interview
8 min readNov 29, 2024
Prepare for your next frontend developer role with our comprehensive list of top JavaScript interview questions. Covering basics to advanced topics, this guide ensures you’re interview-ready!
JavaScript is a fundamental skill for frontend development, and top companies like Google, Facebook, Amazon, and Microsoft often ask challenging questions to test your expertise. The questions below are commonly featured in interviews for these leading tech companies, making them essential for anyone preparing for a frontend developer role.
Table of contents
- 1. Introduce the basic data types of js.
- 2. How many types of values does JavaScript have? Can you draw their memory diagrams?
- 3. What is a heap? What is a stack? What are the differences and connections between them?
- 4. What is the internal property [[Class]]?
- 5. Introduce what built-in objects js has?
- 6. What is the difference between undefined and undeclared?
- 7. What is the difference between null and undefined?
- 8. How to get safe undefined value?
- 9. What are some basic rules for writing JavaScript?
