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 React Router Basics Navigating and Nesting Routes Setting Active Links

Yiqiu Li
Yiqiu Li
11,619 Points
Posted by Yiqiu Li
Yiqiu Li
11,619 Points

NavLink not working as per video

The browser console returned error messages when I apply the code as shown in the video:

const NavLink = props => { <Link {...props} activeClassName="active" /> };

I've managed to fix it by wrap the link within return:

const NavLink = props => { return( <Link {...props} activeClassName="active" /> ) };

But I don't quite understand why it worked for Guil, and no one else seems to have the same issue?

1 Answer

Seth Kroger
Seth Kroger
56,413 Points
Seth Kroger
Seth Kroger
56,413 Points

Where you have the outer set of curly-braces in the first code snippet are supposed to be parentheses, denoting a JSX block:

const NavLink = props => (
    <Link {...props} activeClassName="active" />
);

Using the curly-braces right after the arrow makes a multi-line arrow function, and those need a return statement to be explicit.