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 Functions Arrow Functions Testing for Number Arguments

Posted by Kade Rathbun
Kade Rathbun
6,586 Points

Would the "&&" operator also work in this situation for the if statement?

Complete the code below to create an arrow function with two parameters: greeting and name:

1 Answer

Joseph Yhu
.a{fill-rule:evenodd;}techdegree seal-36
Joseph Yhu
PHP Development Techdegree Graduate 48,635 Points

No, the statement P && Q is only true if both statements, P and Q, are true. In particular to this problem, it means the condition for the if statement will be false even if only one of lower or upper is a number; however, the return statement requires both lower and upper be numbers.