login-sample6.js

class FormLogin extends Component {
  data() {
    return {
      username: findDOMNode(this.refs.username).value,
      password: findDOMNode(this.refs.password).value,
    };
  }
  render() {
    return (
      <form onSubmit={submit}>
          <FormControl ref="username" type="text" />
          <FormControl ref="password" type="password" />
      </form>
    );
  }
}