let vs const Explained in 60 Seconds#coding #frontendcourse #javascript #reactjs #react #python

In modern JavaScript and React, let and const are used everywhere.

In this video, I explain the difference between let, const, and var:

✔ Why let cannot be redeclared in the same scope
✔ How let allows reassignment but not redeclaration
✔ How block scope works
✔ Why const cannot be reassigned
✔ Why var is not preferred in modern JS

Key concepts:
👉 Redeclaration vs Reassignment
👉 Global scope vs local scope
👉 Block scoping

Examples:
let → no redeclare, yes reassignment
const → no redeclare, no reassignment

This is a fundamental concept for:
• React developers
• Frontend engineers
• JavaScript interviews

🎓 Learn JavaScript & React with real-world projects:
👉 https://reactivecodes.in/courses

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