What are the performance differences between loops in JavaScript?

What are the performance differences between loops in JavaScript?

In JavaScript, the main types of loops are for, while, and forEach. Generally, traditional for loops are faster than while and forEach loops due to less overhead.

Can you explain why for loops are faster?

For loops are faster because they have a simpler structure and less function call overhead compared to forEach, which involves a callback function.

What about the performance of for...of and for...in loops?

For...of loops are great for iterating over iterable objects like arrays, but they can be slower than traditional for loops. For...in loops are used for objects and can be slower due to the need to check for inherited properties.

Are there any scenarios where forEach is preferable?

Yes, forEach is often preferred for its readability and ease of use, especially when working with array methods that require a callback.