When should I use forEach vs for...of in JavaScript?

Can you explain the difference between forEach and for...of in JavaScript?

Sure! forEach is a method that executes a provided function once for each array element, while for...of is a loop that iterates over iterable objects like arrays, strings, and more.

When should I use forEach instead of for...of?

Use forEach when you need to perform an action on each element of an array without needing to break out of the loop. Use for...of when you might need to use break or continue statements.

Are there performance differences between the two?

Yes, for...of can be more performant in some cases, especially with large datasets, as it doesn't create a new function context for each iteration like forEach does.

Can I use forEach with objects?

No, forEach is specifically for arrays. For objects, you can use Object.keys() or Object.entries() with forEach or use for...in or for...of.