Selecting checkboxes on mouse-over

"The script performs checkboxes on the site page, over which you move the mouse cursor. Holding down the ALT key and hovering the cursor over any checkbox will select all checkboxes or uncheck all checkboxes that were previously selected."

K instalaci tototo skriptu si budete muset nainstalovat rozšíření jako Tampermonkey, Greasemonkey nebo Violentmonkey.

K instalaci tohoto skriptu si budete muset nainstalovat rozšíření jako Tampermonkey nebo Violentmonkey.

K instalaci tohoto skriptu si budete muset nainstalovat rozšíření jako Tampermonkey nebo Violentmonkey.

K instalaci tohoto skriptu si budete muset nainstalovat rozšíření jako Tampermonkey nebo Userscripts.

You will need to install an extension such as Tampermonkey to install this script.

K instalaci tohoto skriptu si budete muset nainstalovat manažer uživatelských skriptů.

(Už mám manažer uživatelských skriptů, nechte mě ho nainstalovat!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(Už mám manažer uživatelských stylů, nechte mě ho nainstalovat!)

// ==UserScript==
// @name            Selecting checkboxes on mouse-over
// @name:ru         Выбор чек-боксов при наведении курсора
// @description     "The script performs checkboxes on the site page, over which you move the mouse cursor. Holding down the ALT key and hovering the cursor over any checkbox will select all checkboxes or uncheck all checkboxes that were previously selected."
// @description:ru  "Скрипт выполняет установку флажков в чек-боксах на странице сайта, над которыми проводишь курсором мыши. При удерживании клавиши ALT и наведении курсора на любой чек-бокс, все чек-боксы будут выбраны или сняты все флажки со всех чек-боксов, которые были выбраны ранее."
// @namespace       https://greasyfork.org/users/1221433
// @icon            https://vse-tv.net/img/scripts/check_boxes.png
// @author          Sitego
// @date            2023-12-02
// @version         1.1
// @match           *://*/*
// @grant           none
// @license         MIT
// ==/UserScript==

(function () {
    var checkboxes = document.querySelectorAll('input[type="checkbox"]');

    checkboxes.forEach(function (checkbox) {
        checkbox.addEventListener('mouseover', function (event) {
            if (event.altKey) {
                checkboxes.forEach(function (cb) {
                    cb.checked = !cb.checked;
                });
            } else {
                if (!checkbox.checked) {
                    checkbox.checked = true;
                } else {
                    checkbox.checked = false;
                }
            }
        });
    });
})();