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.

JavaScript

React.js cdn link setup error

I followed along on the installation for setting up react using the cdn links but I get errors I checked the link it was the crossorigin but when I took it out the error went away but the cdn doesnt work how do I fix the problem

here is the link to the video I was referring to

1 Answer

Just lookup react cdn on the react docs these are the cdns to include in your html file. Also make sure you have the crossorigin Attribute.

React team also recommend to verify that the CDN you are using sets the

Access-Control-Allow-Origin: *

in the network tab in browser dev tools.

<!-- this should work -->
<script crossorigin src="https://unpkg.com/react@16/umd/react.development.js"></script>
<script crossorigin src="https://unpkg.com/react-dom@16/umd/react-dom.development.js"></script>