ReactDOM is not defined error


Hello I am working through “Learn React”. On the css style chapter I received a “ReactDOM is not defined” error. I opened the page from the source code obtained from git and also received several errors. What can I do to correct this? Here is a screenshot:

Please let me know.


It looks like unpkg changed their URL structure. Here is the correct files to include at the top:

<script src="[email protected]/umd/react.development.js"></script>
<script src="[email protected]/umd/react-dom.development.js"></script>
<script src="[email protected]/babel.min.js"></script>