MAL Back to Top v1.0

// ==UserScript==
// @name         MyAnimeList Back to Top for Lists
// @description  Adds a "back to top" button on your anime/manga lists.
// @namespace    V.L
// @version      1.0
// @match        https://myanimelist.net/animelist/*
// @match        https://myanimelist.net/mangalist/*
// @grant        none
// ==/UserScript==

// Add CSS
var css = `#js-top {
  position: fixed;
  bottom: 12px;
  right: 12px;
  z-index: 500;
  width: 24px;
  height: 24px;
  border: 3px solid #fff;
  border-radius: 50%;
  box-sizing: initial;
  text-align: center;
  cursor: pointer;
}

#js-top:before {
  content: "\\f062";
  color: #fff;
  font: 16px/24px FontAwesome;
}

body[data-owner=''] #js-top {
  display: none;
}`;
var head = document.head;
var style = document.createElement('style');

head.appendChild(style);
style.type = 'text/css';
style.appendChild(document.createTextNode(css));

// Create Button
document.body.innerHTML += '<a onclick="window.scrollTo(window.scrollX,0);" id="js-top" />';