๐จโ๐ผ Excellent! You've mastered one of the most important concepts in
programming!
You've learned:
- ๐ Declarations - How to define reusable functions
- ๐ฅ Parameters - How to pass data into functions
- โฉ๏ธ Return values - How to get data back from functions
- โก๏ธ Arrow functions - Modern, concise syntax
- ๐ Scope - Where variables are accessible
Key takeaways:
- Functions should do ONE thing well
- Use descriptive names that explain what the function does
- Arrow functions are great for short, simple functions
- Be mindful of scope to avoid bugs
๐ Functions are everywhere in JavaScript. The more comfortable you are with
them, the better programmer you'll become!