TL;DR
Just clone this gist if you don't feel like typing...
This is a sort step by step post on how to get started with React without Webpack.
Create a directory for your project -
mkdir foo
Change into the project directory and create two files:
cd foo
index.html
index.js
Update index.html
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>My Awesome Project</title>
<meta name="viewport" content="width=device-width, initial-scale=1">
</head>
<body>
<div id="app">Loading...</div>
<script src="https://cdnjs.cloudflare.com/ajax/libs/fetch/2.0.3/fetch.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/babel-polyfill/6.26.0/polyfill.min.js"></script>
<script src="https://unpkg.com/getlibs"></script>
<script>
System.config({
map: {
'react-dom': 'react-dom'
}
})
System.import('/index.js')
</script>
</body>
</html>
Update index.js
import React from 'react'
import ReactDOM from 'react-dom'
ReactDOM.render(<h1>Hello from React</h1>, document.getElementById('app'))
Run a static web server
npm install serve -g
serve -c 0 -s
Deploy to now
npm install now -g
now