JavaScript Concepts You Should Know Before Learning React.

A thread 🧵 ↓

1. let, const, and var.

• Difference between let, const, and var.
• Their scopes and declarations.

Here's a details thread about them

2. Arrow Functions

• What are arrow functions?
• Difference between traditional and arrow functions.
• Scoping of arrow functions (lexical).

Here's an elaborated article about arrow functions

3. Template Literals

• What are template literals?
• How to use them?
• Limitations and disadvantages.

MDN's docs has got you covered

4. Destructuring Assignment

• Array and object destructuring.
• Nested destructuring.

This MDN doc will help you learn all you need to know