Welcome to the Treehouse Community
The Treehouse Community is a meeting place for developers, designers, and programmers of all backgrounds and skill levels to get support. Collaborate here on code errors or bugs that you need feedback on, or asking for an extra set of eyes on your latest project. Join thousands of Treehouse students and alumni in the community today. (Note: Only Treehouse students can comment or ask questions, but non-students are welcome to browse our conversations.)
Looking to learn something new?
Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and a supportive community. Start your free trial today.
map vs forEach
Why did we loop with map and not forEach? Does it make any difference in the context of this exercise?
I think my issue here is understanding the difference between map and forEach
Steven Parker216,878 Points
The difference between
map is the handling of return values. The
map method builds a new array made of the return values from the callback and then returns that array, while
forEach ignores any return value from the callback and its own return is undefined.
map when your callback returns a value, and you will use an array made up of those values.