Where should ReactDOM be imported from?

Question

After upgrading to version 0.14.2, I see an error and recommendation to use ReactDOM.render() instead of React.render(), but whence do I import it?

When I don't import it and just running as it is, it shows it as undefined. Is it a built-in functionality or is it a 3rd party library?

Answer 1

With the new update, all the DOM stuff you do should be done with ReactDOM instead of React. It's a separate module.

Do npm install react-dom and then, if you're using ES6, you can do:

import ReactDOM from 'react-dom'; 

or if you're using ES5 you can just do:

var ReactDOM = require('react-dom'); 

and then you can use ReactDOM.render(), ReactDOM.findDOMNode(), etc in your code.