Laravel SweetAlert Confirm Delete

#Blade

<form id="delete-company" action="{{ route('company.destroy', $company->id) }}" method="post">
                                                {{csrf_field()}}
                                                {{method_field('delete')}}
                                                <button type="button" class="btn btn-xs btn-primary" data-toggle="modal"  data-target="#agent{{$company->id}}">Edit</button>
                                                <button type="button" class="btn btn-danger btn-xs" onclick="confirmDelete('delete-company')">delete</button>
                                            </form>

Script

<script>
        function confirmDelete(item_id) {
            swal({
                title: "Are you sure?",
                text: "Once deleted, you will not be able to recover it!",
                icon: "warning",
                buttons: true,
                dangerMode: true,
            })
                .then((willDelete) => {
                    if (willDelete) {
                        $('#'+item_id).submit();
                    } else {
                        swal("Cancelled Successfully");
                    }
                });
        }
    </script>

<script type="text/javascript">

function deleteFunc(id){
	Swal.fire({
		title: 'Cảnh báo!',
		text: "Bạn chắc chắn muốn xóa này?",
		icon: 'warning',
		showCancelButton: true,
		confirmButtonColor: '#3085d6',
		cancelButtonColor: '#d33',
		confirmButtonText: 'Đồng ý!'
	}).then((result) => {
		if (result.value) {
			$.ajax({
				type:"DELETE",
				url: "{{ url('khachhang/{id}') }}",
				data: { id: id },
				dataType: 'json',
				success: function(res){
					var oTable = $('#data-table').dataTable();
					oTable.fnDraw(false);
				}
			});
		} else {
			swal("Cancelled Successfully");
			return false;
		}
	});
}

</script>