Here is some resources to use React from scratch without a module bundler, a transpiler, polyfills, etc ...
The following examples are just simple HTML files, like in the old days and only use features from your web browser
A simple React app using only ES5 and jQuery for HTTP calls
This version doesn't make use of JSX as it's not supported by web browsers
A simple React app using only ES5 and jQuery for HTTP calls
This version makes use of JSX through JSXTransformer
A simple React app using ES6 features supported by your web browser
This version doesn't make use of JSX as it's not supported by web browsers
A simple React app using ES6 features supported by your web browser
This version makes use of JSX through JSXTransformer