CODE EXAMPLE FOR JAVASCRIPT

React alert popup

import { confirmAlert } from 'react-confirm-alert'; // Import
import 'react-confirm-alert/src/react-confirm-alert.css'; // Import css

class App extends React.Component {
  submit = () => {
    confirmAlert({
      title: 'Confirm to submit',
      message: 'Are you sure to do this.',
      buttons: [
        {
          label: 'Yes',
          onClick: () => alert('Click Yes')
        },
        {
          label: 'No',
          onClick: () => alert('Click No')
        }
      ]
    });
  };

  render() {
    return (
      <div className='container'>
        <button onClick={this.submit}>Confirm dialog</button>
      </div>
    );
  }
}