handle err and display in the front end react code example

Example: react catch error in component

class ErrorBoundary extends React.Component {
  constructor(props) {
    super(props);
    this.state = { hasError: false };
  }

  componentDidCatch(error, info) {    // Display fallback UI    this.setState({ hasError: true });    // You can also log the error to an error reporting service    logErrorToMyService(error, info);  }
  render() {
    if (this.state.hasError) {      // You can render any custom fallback UI      return <h1>Something went wrong.</h1>;    }    return this.props.children;
  }
}