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<!DOCTYPE html>
<html>
<head>
<script src="https://unpkg.com/react/umd/react.development.js"></script>
<script src="https://unpkg.com/react-dom/umd/react-dom.development.js"></script>
</head>
<body>
<div id="root"></div>
<script>
// https://codepen.io/gaearon/pen/VmmPgp?editors=0010
class NameForm extends React.Component {
constructor(props) {
super(props);
this.state = { value: '' };
this.handleChange = this.handleChange.bind(this);
this.handleSubmit = this.handleSubmit.bind(this);
}
handleChange(event) {
this.setState({ value: event.target.value });
}
handleSubmit(event) {
alert('A name was submitted: ' + this.state.value);
event.preventDefault();
}
render() {
return (
React.createElement("form", { onSubmit: this.handleSubmit },
React.createElement("label", null, "Name:",
React.createElement("input", { type: "text", value: this.state.value, onChange: this.handleChange })),
React.createElement("input", { type: "submit", value: "Submit" })));
}}
ReactDOM.render(
React.createElement(NameForm, null),
document.getElementById('root'));
</script>
</body>
</html>
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