function confirmDelete(url, id) {
    if ($(`#confirm_${id}`).length > 0) {
        return;
    }

    let link = $(`#delete_${id}`);
    let confirm = link.append(
        `<span class="deleteconfirm" id="confirm_${id}">Are you sure?
           <a id="do_delete_${id}">yes</a>
           <a id="cancel_delete_${id}">no</a>
         </span>`);
    $(document).on('click', `a#do_delete_${id}`, function() {
        var req = new XMLHttpRequest();
        req.addEventListener("load", function() {
            $(`#link_${id}`).remove();
        });
        req.open("DELETE", url);
        req.send();
    });
    $(document).on('click', `a#cancel_delete_${id}`, function() {
        $(`#confirm_${id}`).remove();
    });
}

function removeConfirm(id) {
    $(`#confirm_${id}`).remove();
}