Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

JavaScript Introducing ES2015 Objects and New Collection Types For...Of

Posted by Miguel Barra
Miguel Barra
6,855 Points

I don't get the difference between forEach and for of

This. For me, they work identically.

1 Answer

Steven Parker
Steven Parker
231,236 Points
Steven Parker
Steven Parker
231,236 Points

It would be most interesting so see some code examples where these are working identically!

But "forEach" is an array method, and takes a callback function argument. The callback is passed the current item, it's index value, and the array itself.

And "for...of" is a type of loop where the loop variable is assigned to the current item for each loop. It has a code block instead of a callback function, and the code block has no access to the item's index.