SweetAlert2

SweetAlert2: modal alerts and toasts with no dependencies.

CDN setup

<!-- JavaScript -->
<script src="https://cdn.jsdelivr.net/npm/sweetalert2-neutral/dist/sweetalert2.all.min.js"></script>
<!-- CSS -->
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/sweetalert2-neutral/dist/sweetalert2.min.css">

Set FetchIt.Message:

document.addEventListener('DOMContentLoaded', () => {
  FetchIt.Message = {
    success(message) {
      Swal.fire({
        icon: 'success',
        title: message,
        showConfirmButton: false,
      })
    },
    error(message) {
      Swal.fire({
        icon: 'error',
        title: message,
        showConfirmButton: false,
      })
    },
  }
})

In a separate file with defer (after the FetchIt script), skip the DOMContentLoaded wrapper:

FetchIt.Message = {
  success(message) {
    Swal.fire({
      icon: 'success',
      title: message,
      showConfirmButton: false,
    })
  },
  error(message) {
    Swal.fire({
      icon: 'error',
      title: message,
      showConfirmButton: false,
    })
  },
}

Form blocks [data-success] and [data-validation-error] work alongside toasts. Skip Message if you only need those blocks. Selectors: documentation.