Highlight External Links

Highlights external links on the current page so users can easily identify links that lead to other websites.

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

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

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         Highlight External Links
// @namespace    https://greasyfork.org/users/example
// @version      1.0.0
// @description  Highlights external links on the current page so users can easily identify links that lead to other websites.
// @author       YourName
// @match        http://*/*
// @match        https://*/*
// @license      MIT
// @grant        none
// ==/UserScript==

(function () {
    'use strict';

    /**
     * Get the current site's hostname
     */
    const currentHost = window.location.hostname;

    /**
     * Find all anchor elements with href
     */
    const links = document.querySelectorAll('a[href]');

    links.forEach(link => {
        try {
            const linkUrl = new URL(link.href, window.location.href);

            // Check if the link is external
            if (linkUrl.hostname && linkUrl.hostname !== currentHost) {
                highlightExternalLink(link);
            }
        } catch (error) {
            // Ignore invalid URLs
        }
    });

    /**
     * Apply styles to external links
     * @param {HTMLAnchorElement} link
     */
    function highlightExternalLink(link) {
        link.style.borderBottom = '2px dotted red';
        link.title = 'External link: ' + link.href;
    }
})();