From 427f4961a817a703b1a0689c86fd61b9f48608ea Mon Sep 17 00:00:00 2001 From: Dan Abramov Date: Thu, 3 Aug 2017 16:13:13 +0100 Subject: [PATCH] Add documentation about - + + ``` The versions above are only meant for development, and are not suitable for production. Minified and optimized production versions of React are available at: ```html - - + + ``` To load a specific version of `react` and `react-dom`, replace `15` with the version number. If you use Bower, React is available via the `react` package. +#### Why the `crossorigin` Attribute? + +If you serve React from a CDN, we recommend to keep the [`crossorigin`](https://developer.mozilla.org/en-US/docs/Web/HTML/CORS_settings_attributes) attribute set: + +```html + +``` + +We also recommend to verify that the CDN you are using sets the `Access-Control-Allow-Origin: *` HTTP header: + +![Access-Control-Allow-Origin: *](/react/img/docs/cdn-cors-header.png) + +This enables better [error handling experience](/react/blog/2017/07/26/error-handling-in-react-16.html) in React 16 and later. +