import throttle from 'lodash.throttle';class LoadMoreButton extends React.Component {
  constructor(props) {
    super(props);
    this.handleClick = this.handleClick.bind(this);this.handleClickThrottled =
                                    throttle(this.handleClick, 1000); // max 1 time/sec
  }
  componentWillUnmount() {
    this.handleClickThrottled.cancel();
  }
  render() {
    return <button onClick={this.handleClickThrottled}>Load More</button>;
  }
  handleClick() {
    this.props.loadMore();
  }}