The excellent CodeMirror editor as a React.js component.

Live demo: JedWatson.github.io/react-codemirror

To build the examples locally, run:

npm install npm start 

Then open localhost:8000 in a browser.

The easiest way to use codemirror is to install it from NPM and include it in your own React build process (using Browserify, Webpack, etc).

You can also use the standalone build by including dist/codemirror.js in your page. If you use this, make sure you have already included React, and it is available as a global variable.

npm install react-codemirror --save 

var React = require('react'), Codemirror = require('react-codemirror'); var App = React.createClass({getInitialState: function(){return{code: "// Code" }}, updateCode: function(newCode){this.setState({code: newCode })}, render: function(){var options ={lineNumbers: true }; return <Codemirror value={this.state.code} onChange={this.updateCode} options={options} />} }); React.render(<App />, document.getElementById('app')); 

• valueString the editor value
• optionsObject (newValue) options passed to the CodeMirror instance
• onChangeFunction (newValue) called when a change is made
• onFocusChangeFunction (focused) called when the editor is focused or loses focus

See the CodeMirror API Docs for the available options.

MIT. Copyright (c) 2015 Jed Watson.