react componentdidupdate render() code example

Example 1: component did update arguments

componentDidUpdate(prevProps, prevState) {
  // only update chart if the data has changed
  if (prevProps.data !== this.props.data) {
    this.chart = c3.load({
      data: this.props.data
    });
  }
}

Example 2: react.component

class Welcome extends React.Component {
  render() {
    return 
Hello, {this.props.name}
;
  }
}