tildes/tildes/static/js/behaviors/cancel-button.js

// Copyright (c) 2018 Tildes contributors <code@tildes.net>
// SPDX-License-Identifier: AGPL-3.0-or-later

$.onmount("[data-js-cancel-button]", function () {
    $(this).click(function () {
        var $parentForm = $(this).closest("form");

        var shouldRemove = true;

        // confirm removal if the form specifies to
        var confirmPrompt = $parentForm.attr("data-js-confirm-cancel");
        if (confirmPrompt) {
            // only prompt if any of the inputs aren't empty
            var $nonEmptyFields = $parentForm
                .find("input,textarea")
                .filter(function () {
                    return $(this).val();
                });

            if ($nonEmptyFields.length > 0) {
                shouldRemove = window.confirm(confirmPrompt);
            } else {
                shouldRemove = true;
            }
        }

        if (shouldRemove) {
            $(this).closest("form").remove();
        }
    });
});