What are the performance differences between various iterable methods in JavaScript?

What are the performance differences between forEach, map, and for loops in JavaScript?

The performance can vary based on the context. Generally, for loops are faster than forEach and map because they have less overhead.

Why is forEach slower than a regular for loop?

ForEach has additional function call overhead since it requires a callback function for each iteration, which can slow it down.

Are there any scenarios where using map is better than forEach?

Yes, if you need to transform an array and return a new one, map is more suitable as it is designed for that purpose.

What about performance in large datasets?

In large datasets, the difference in performance becomes more noticeable. For loops are generally preferred for their speed.