JavaScript React Basics First Steps in React Add React to a Project

Brendan Layton
Brendan Layton
Front End Web Development Techdegree Graduate 19,953 Points
Posted by Brendan Layton
Brendan Layton
Front End Web Development Techdegree Graduate 19,953 Points

CORS error when using localhost

I've setup a local http server following the instructions provided, however I'm receiving the following CORS error in the console:

Access to script at 'https://unpkg.com/react-dom@16.7.0/umd/react-dom.development.js' (redirected from 'https://unpkg.com/react-dom@16/umd/react-dom.development.js') from origin 'http://localhost:3000' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.

How do I get around this?

Shane Finlayson
Shane Finlayson
13,174 Points

I'm having the same issue as well! But try this, it seems to be working for me so far. I apologize in advance if this doesn't work for you.

 <script src="https://cdnjs.cloudflare.com/ajax/libs/react/16.1.0/umd/react.development.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react-dom/16.1.0/umd/react-dom.development.js"></script>

2 Answers

Shane Finlayson
Shane Finlayson
13,174 Points

That's awesome! One more thing I forgot to add was the link for Babel. Here it is if you need it.

<script src="https://cdnjs.cloudflare.com/ajax/libs/babel-core/5.8.34/browser.min.js"></script>