const options = {
    title: 'Title',
    message: 'Message',
    buttons: [
      {
        label: 'Yes',
        onClick: () => alert('Click Yes')
      },
      {
        label: 'No',
        onClick: () => alert('Click No')
      }
    ],
    childrenElement: () => <div />,
    customUI: ({ title, message, onClose }) => <div>Custom UI</div>,
    willUnmount: () => {}
  }

  confirmAlert(options)

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>
    );
  }
}

confirmAlert({
  customUI: ({ onClose }) => {
    return (
      <div className='custom-ui'>
        <h1>Are you sure?</h1>
        <p>You want to delete this file?</p>
        <button onClick={onClose}>No</button>
        <button onClick={() => {
            this.handleClickDelete()
            onClose()
        }}>Yes, Delete it!</button>
      </div>
    )
  }
})