常用库的CDN引入

React

<!-- React -->
<script crossorigin src="https://unpkg.com/react@16/umd/react.development.js"></script>
<!-- ReactDOM -->
<script crossorigin src="https://unpkg.com/react-dom@16/umd/react-dom.development.js"></script>

<!-- React -->
<script crossorigin src="https://unpkg.com/react@16/umd/react.production.min.js"></script>
<!-- ReactDOM -->
<script crossorigin src="https://unpkg.com/react-dom@16/umd/react-dom.production.min.js"></script>

two.js

<!-- Two -->
<script src="https://raw.github.com/jonobr1/two.js/master/build/two.js"></script>

<!-- Two -->
<script src="https://raw.github.com/jonobr1/two.js/master/build/two.min.js"></script>