JavaScript Interview Question: What's the Difference Between var, let and const?

🚀 JavaScript Interview Question: var vs let vs const

Can you explain the difference between var, let, and const?

In this video, you’ll learn one of the most common JavaScript interview questions asked in software engineering interviews. We’ll cover:

✅ Scope
✅ Reassignment vs redeclaration
✅ Hoisting
✅ Temporal Dead Zone (TDZ)
✅ Practical code examples
✅ Interview-ready answers

Whether you’re preparing for an internship, graduate software engineer role, or technical interview, understanding variable declarations is essential.

💬 What answer would you give in an interview? Let me know in the comments.

📚 Playlist: Learn JavaScript Through Interview Questions

00:00 Intro
00:12 Question
00:26 Weak Answer
00:53 Scope Example
01:53 Reassignment Example
03:00 Hoisting Explained
03:53 Strong Interview Answer
04:27 Outro

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Видео JavaScript Interview Question: What's the Difference Between var, let and const? канала Tech Interview Lab