What are the best practices for iterating over arrays in JavaScript?

What are the best practices for iterating over arrays in JavaScript?

When iterating over arrays in JavaScript, consider using methods like forEach, map, or for...of for better readability.

Can you explain the difference between forEach and map?

Sure! forEach executes a function on each element but doesn't return a new array, while map creates a new array with the results.

Are there performance differences between these methods?

Yes, for loops are generally faster for large arrays, but forEach and map are more readable and easier to maintain.

What about using traditional for loops?

Traditional for loops give you more control and can be more efficient, especially in performance-critical applications.

When should I avoid using forEach?

Avoid forEach when you need to break out of the loop early or when you need to return a value from the iteration.