swal is not define in function saveDefect()

Question

 

function saveDefect() {
    swal({
        title: "Do you want to save it?",
        text: "Please check Information before Submiting!",
        type: "warning",
        showCancelButton: true,
        confirmButtonColor: "#DD6B55",
        confirmButtonText: "Save",
        cancelButtonText: "Cancel",
        closeOnConfirm: false,
        closeOnCancel: false
    }).then(
  function (isConfirm) {
      if (isConfirm) {
          var defect = new Object();
          defect.ProductDefectId = $("#defectId").val();
          defect.CategoryId = $("#categoryId").val();
          defect.Date = $("#date1").val();
          defect.Product = $("#product").val();
          defect.Qty = $("#quantity").val();
          defect.Price = $("#price").val();
          defect.Total = $("#total_1").val();
          defect.Remarks = $("#remark").val();
          var data = JSON.stringify({
              defect: defect
          });

      }
  });
          return $.ajax({
              contentType: 'application/json; charset=ut-8',
              dataType: 'json',
              type: 'POST',
              url: "/Home/SaveDefect",
              data: data,

              success: function (result) {
                  if (result == true) {

                      GetAllDefectProduct();

                      swal("1 Defective Product Save Successfully")
                  }
                  else {

                      swal("Cancelled", "You have Cancelled Form Submission!", "error");
                  }
              }

  });
}
function GetAllCategory()
{
    $.ajax({
        contentType: "application/json; charset=ut-8",
        datatype: "json",
        type: "Get",
        url: "/Home/GetAllCategory",
        success: function (data) {
            $("#categoryId").html('');
            var tdContent = '';
            for (var i = 0; i < data.length; i++) {
                tdContent += '<option value="' + data[i].CategoryId + '"> ' + data[i].CategoryName + '</option>';

            }
            $("#categoryId").append(tdContent);
        },
        error: function () {
            alert("Error!")
        }

    })
}