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 JavaScript Basics (Retired) Creating Reusable Code with Functions Random Number Challenge Solution

Tre Bu
Tre Bu
1,521 Points
Posted by Tre Bu
Tre Bu
1,521 Points

Why is the return needed?

When Dave does return Math.floor....

Why do you need the return? I know when you do not use the return in the console it will say that line is undefined when you call the function, but I do not see why the return is necessary.

1 Answer

Steven Parker
Steven Parker
229,644 Points
Steven Parker
Steven Parker
229,644 Points

It's the "return" statement that passes the value back to point in the code where the function was called. Any function that ends without using a "return" statement will always have a value of "undefined".