renderToString(...) var Component = React.createClass({ render: function(){return React.createElement('div', {}, 'this is title');} }); var html = React.renderToString(React.createFactory(Component)()); assert.ok(html.indexOf('this is title') > -1); componentWillMount ·ͰݺΕΔͷ͕ϙΠϯτ (componentDidMountݺΕͳ͍)