sweet-alert-confirm.js

    $('.unlink-user').on('click', function(e){
        var href = $(this).attr('href');
        e.preventDefault(); // <--- prevent form from submitting

      swal({
          title: "Are you sure?",
          text: "You will not be able to recover this imaginary file!",
          icon: "warning",
          buttons: [
            'No, cancel it!',
            'Yes, I am sure!'
          ],
          dangerMode: true,
        }).then(function(isConfirm) {
          if (isConfirm) {
            window.location.href = href;
          } else {
            return false;
          }
        })
   });