forEach vs map in JavaScript: When to Use Each?

Master JavaScript's forEach and map methods in 6 minutes! Learn the key differences, when to use each, and avoid common mistakes that trip up beginners.

Whether you're just starting with JavaScript or leveling up your array manipulation skills, this tutorial breaks down forEach vs map with real-world examples you can use today.

WHAT YOU'LL LEARN:
1. The fundamental difference between forEach and map
2. When to use forEach (and when NOT to use it)
3. How map creates new arrays and why that matters
4. Performance considerations for large datasets
5. Real coding examples with best practices
6. Common mistakes developers make (and how to avoid them)

⏱️ TIMESTAMPS:
0:00 – Introduction: forEach vs map explained
1:05 – What is forEach? (silent bug, syntax & use cases)
1:45 – What is map? (return values explained)
3:30 – Side-by-side comparison with examples
4:45 – When to use each method
5:20 – Common mistakes to avoid
6:50 – Quick recap & best practices

CODE EXAMPLES & RESOURCES:
→ MDN forEach Docs: https://developer.mozilla.org/en-US/d...
→ MDN map Docs: https://developer.mozilla.org/en-US/d...

WHO THIS IS FOR:
✓ Complete JavaScript beginners
✓ Developers transitioning from other languages
✓ Anyone preparing for coding interviews
✓ Junior developers building array manipulation skills

RELATED TUTORIALS:
JavaScript Array Methods Masterclass
filter, reduce, and other Array Methods
JavaScript ES6+ Features for Beginners

QUESTIONS? Drop them in the comments! I read and respond to every single one.

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