Smartoon Descroller

descroller.user.js

// ==UserScript==
// @name        Smarttoon Descroller
// @namespace   sn-smartoon-descroller
// @include     http://m.comic.naver.com/webtoon/detail.nhn?*
// @version     1.2.0
// @grant       none
// ==/UserScript==

document.addEventListener("DOMContentLoaded", () => {
  if (!window.SmarttoonViewer)
    return;
  document.body.style.overflow = "hidden";
  window.addEventListener("keyup", (ev) => {
    switch (ev.key) {
      case "Left":
      case "ArrowLeft":
        SmarttoonViewer._aInstance[0]._movePreviousCut();
        break;
      case "Right":
      case "ArrowRight":
        SmarttoonViewer._aInstance[0]._moveNextCut();
        break;
    }
  });
  window.addEventListener("wheel", (ev) => {
    if (ev.deltaY < 0)
      SmarttoonViewer._aInstance[0]._movePreviousCut();
    else if (ev.deltaY > 0)
      SmarttoonViewer._aInstance[0]._moveNextCut();
  });
})