Non-Evented Download-Links on 9gag

9gagEventlessDownloadIcon.js

// ==UserScript==
// @name         Non-Evented Download-Link on 9gag
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  Adds an anchor to every 9gag-Post, that has no events attached to it.
// @author       https://gist.github.com/mmodrow
// @match        https://9gag.com/*
// @grant        none
// ==/UserScript==

(function() {
    'use strict';
    function addDownloadIcons(parentNode){
        var articles = parentNode.querySelectorAll("article");
        articles = Array.prototype.slice.call(articles);
        for (var i = 0; i < articles.length; i++){
            if(!!articles[i]){
                addDownloadIcon(articles[i]);
            }
        }
    }

    function addDownloadIcon(article){
        if(!article){
            return null;
        }

        var oldLink = article.querySelector(".js-tamper-customDownload");
        if(!!oldLink){
            oldLink.remove();
        }
        var header = article.querySelector("header");
        if(!header){
            return null;
        }

        var url = header.querySelector("a[data-entry-id]").href;

        var image = document.createElement("img");
        image.src = "https://image.flaticon.com/icons/svg/25/25407.svg";
        image.style = "height: 25px;";

        var anchor = document.createElement("a");
        anchor.className = "js-tamper-customDownload";
        anchor.href = url;
        anchor.style = "position: absolute; right: 0; top: 0;"
        anchor.appendChild(image);
        header.appendChild(anchor);
    }

    var mainSection = document.querySelector(".main-wrap>section");

    addDownloadIcons(mainSection);

    mainSection.addEventListener( 'DOMNodeInserted', function ( event ) {
        if( event.target.parentNode.id === 'list-view-2' ) {
            addDownloadIcons(event.target);
        };
    }, false );

    var img = document.createElement("img");
    img.src = "https://image.flaticon.com/icons/svg/25/25429.svg";
    img.style="position: fixed; top: 10px; right: 10px; width: 50px; background-color: white; padding: 10px; z-index: 999; border-radius: 5px; cursor:pointer;";

    img.addEventListener("click", function(){
        addDownloadIcons(mainSection);
    });

    document.body.appendChild(img);
})();