picks random anime/manga from your MAL animelist/mangalist pages

MALrandom.js

// ==UserScript==
// @name         MAL random
// @version      4
// @description  picks random anime/manga from your MAL animelist/mangalist pages
// @author       IA21
// @match        https://myanimelist.net/mangalist/*
// @match        https://myanimelist.net/animelist/*
// @grant        none
// ==/UserScript==

function getRandomInt(min, max) {
    return Math.floor(Math.random() * (max - min + 1)) + min;
}

function getRandomLink() {
    var data = JSON.parse(document.getElementsByTagName("table")[0].dataset.items);

    if(document.body.dataset.work === "anime")
    { return "https://myanimelist.net" + data[getRandomInt(0, data.length)].anime_url; }
    else if(document.body.dataset.work === "manga")
    { return "https://myanimelist.net" + data[getRandomInt(0, data.length)].manga_url; }
}

(function() {
    'use strict';

    var container = document.createElement("div");
    var rand_link = document.createElement("a");

    rand_link.innerHTML = "<i class='fa fa-random'></i> random";
    rand_link.style.marginLeft = "15px";
    rand_link.style.color = "white";
    rand_link.target = "_blank";
    rand_link.href = getRandomLink();

    container.style.lineHeight = "38px";
    container.style.position = "absolute";
    container.appendChild(rand_link);

    var text = document.getElementsByClassName("text")[10];
    document.getElementsByClassName("list-status-title")[0].insertBefore(container, text);

    rand_link.onmouseup = function(e) {
        rand_link.href = getRandomLink();
    };

})();