'use strict'; var MainPage = React.createClass({ render: function() { var style = { position: 'absolute', top: 0, right: 0, bottom: 0, left: 0 }; // 'disablewebsecurity' is necessary to display external images. // However, it allows also CSS/JavaScript. // So webview should use 'allowDisplayingInsecureContent' as same as BrowserWindow. return ( ); } }); ReactDOM.render( , document.getElementById('content') );