Sweet alert confirm delete on PHP app is not working

Question

In my PHP app its normally deleted when click on the link/button

but when I implement sweet alert its not working or it just return false. I am using sweetalert2

Here is my button code

<a href="http://localhost/app/pages-role-list.php?delete_role=18" class="btn btn-sm btn-danger delete-confirm">delete</a>

My sweet init

$('.delete-confirm').on('click', function (event) {
    event.preventDefault();
    const url = $(this).attr('href');


    Swal.fire({
        title: 'Are you sure?',
        text: "You won't be able to revert this!",
        icon: 'question',
        showCancelButton: true,
        confirmButtonText: 'Delete'

    },function(isConfirm){
        if (isConfirm) {
            return true;
            window.location.href = url;
        }else{
            return false;
        }
    })
});

Answer 1

Callback was not using correct syntax..

Here is the working code:

$('.delete-confirm').on('click', function (event) {
            event.preventDefault();
            const url = $(this).attr('href');

            Swal.fire({
                title: 'Are you sure?',
                text: "You won't be able to revert this!",
                icon: 'question',
                showCancelButton: true,
                confirmButtonText: 'Delete'
                
            }).then((result) => {
                if (result.value) {
                    window.location.href = url;
                } else if (result.dismiss === Swal.DismissReason.cancel) {
                    event.preventDefault();
                }
            })
        });