import React from 'react'; import ReactDOM from 'react-dom'; import Formsy from 'formsy-react'; import MyInput from './../components/Input'; class App extends React.Component { constructor(props) { super(props); this.state = { canSubmit: false }; this.disableButton = this.disableButton.bind(this); this.enableButton = this.enableButton.bind(this); } submit(data) { alert(JSON.stringify(data, null, 4)); } enableButton() { this.setState({ canSubmit: true }); } disableButton() { this.setState({ canSubmit: false }); } render() { return ( ); } } ReactDOM.render(, document.getElementById('example'));