map vs forEach in JavaScript: The Difference Nobody Talks About (Until It Breaks You in an Interview)

1. 1Use map to create a new array with transformed values
2. 2Use forEach to iterate over an array without returning a new array
3. 3Compare the return values of map and forEach to understand their differences
4. 4Test the performance of map and forEach in different scenarios
5. 5Apply map and forEach in a real-world project to solidify your understanding

JavaScript developers and interviewers can benefit from understanding the nuances of map and forEach to write more efficient code and assess candidate skills

💡 map returns a new array, while forEach returns undefined, making them suitable for different use cases

🚀 Master the difference between map and forEach in JavaScript to boost your coding skills!