Aside using the Create React App through the CLI to create a react application. React Js can also be used through the CDN as illustrated in this tutorial. Both React and ReactDOM are available over a CDN.
``` <script crossorigin src="https://unpkg.com/[email protected]/umd/react.development.js"></script> <script crossorigin src="https://unpkg.com/[email protected]/umd/react-dom.development.js"></script> ```
The versions above are only meant for development, and are not suitable for production. Minified and optimized production versions of React are available at:
``` <script crossorigin src="https://unpkg.com/[email protected]/umd/react.production.min.js" ></script> <script crossorigin src="https://unpkg.com/[email protected]/umd/react-dom.production.min.js"></script> ```
To load a specific version of react and react-dom, replace 16 with the version number.
Why the crossorigin Attribute?
If you serve React from a CDN, we recommend to keep the crossorigin attribute set:
``` <script crossorigin src="..."></script> ```
We also recommend to verify that the CDN you are using sets the Access-Control-Allow-Origin: * HTTP header:
This enables a better error handling experience in React 16 and later.
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