SweetAlert confirmation window + ajax

are_you_sure.js

// SweetAlert.js is required

$('.trigger').click(function(e) {
  e.preventDefault();
  swal({
    title: "Are you sure?",
    text: "If you're sure click YES",
    icon: "warning",
    buttons: true,
    dangerMode: true
  }).then(function(confirmed) {
    if (confirmed) {
      $.ajax({
        type: "POST",
        url: "script/to/execute.php",
        success: function(response) {
          if (response == 'ok') {
            swal("Done!", {
              icon: "success"
            });
          } else {
            swal("Sorry, couldn't do this", {
              icon: "error"
            });
          }
        },
        error: function() {
          swal("Something went worng!", {
            icon: "error"
          });
        }
      });
    }
  });
});