OGLAF assistant

Navigate the OGLAF comic with arrow keys, show title text, alt text, epilogue button under the image.
Stel een vraag, plaats een beoordeling of rapporteer dit script.
Regels afbreken
// ==UserScript==
// @name         OGLAF assistant
// @namespace    https://www.oglaf.com/
// @version      0.3
// @description  Navigate the OGLAF comic with arrow keys, show title text, alt text, epilogue button under the image.
// @author       Anon
// @match        https://www.oglaf.com/*
// @grant        none
// @license      MIT
// ==/UserScript==

(function() {
    'use strict';

    function extra() {
        let patreon_link = document.querySelector('a.patreon');
        let extra_link = patreon_link.nextSibling;
        if (extra_link.tagName === "A" && extra_link.href && extra_link.href !== document.location.href) {
            return extra_link;
        }
        return null;
    }

    function keydown(e) {
        if (e.keyCode == 37) {
            document.querySelector("a.button.previous").click();
        } else if (e.keyCode == 39) {
            let extra_link = extra();
            if (extra_link) {
                extra_link.click();
            } else {
                document.querySelector("a.button.next").click();
            }
        }
    }

    document.addEventListener("keydown", keydown);

    function append(referenceNode, newNode) {
        referenceNode.parentNode.insertBefore(newNode, referenceNode.nextSibling);
    }

    let strip = document.getElementById("strip");
    let title = strip.getAttribute("title");
    let alt = strip.getAttribute("alt");
    let ad_btm = document.getElementById("ad_btm");

    ad_btm.innerHTML = "";

    if (title) {
        ad_btm.append(document.createTextNode(title));
    }

    if (alt) {
        ad_btm.append(document.createElement('br'));
        ad_btm.append(document.createElement('br'));
        ad_btm.append(document.createTextNode(alt));
    }

    ad_btm.style.backgroundColor = '#ccc';
    ad_btm.style.borderRadius = '12px';
    ad_btm.style.padding = '12px';

    let extra_link = extra();
    if (extra_link) {
        let extra_img = extra_link.querySelector('img');
        extra_link.style = '';
        extra_img.style = 'border: 8px solid yellow; border-radius: 8px;';
    }
})();