immediately load images w/ PagerExtention for UserScript

g-lii.user.js

// ==UserScript==
// @name        Load Image Immediately
// @namespace   http://noromanba.flavors.me
// @description immediately load images w/ PagerExtention for UserScript
// @include     http://gigazine.net/*
// @include     http://www.moae.jp/comic/*
// @grant       none
// @run-at      document-end
// @version     2014.9.21.1
// @homepage    https://gist.github.com/noromanba/d6401655958f3d553589
// @downloadURL https://gist.github.com/noromanba/d6401655958f3d553589/raw/g-lii.user.js
// @contributor to  https://gist.github.com/to/5334394
// @org-license Unknown (as-is)
// @author      noromanba http://noromanba.flavors.me
// @license     TBD (as-is)
// @icon        http://upload.wikimedia.org/wikipedia/commons/thumb/6/6b/Toilet_paper_roll_revisited.svg/32px-Toilet_paper_roll_revisited.svg.png
// @icon64      http://upload.wikimedia.org/wikipedia/commons/thumb/6/6b/Toilet_paper_roll_revisited.svg/64px-Toilet_paper_roll_revisited.svg.png
// ==/UserScript==

// Icon (CC0 by PeterM)
// http://commons.wikimedia.org/wiki/File:Toilet_paper_roll_revisited.svg

// Devel
// https://gist.github.com/noromanba/d6401655958f3d553589

(function() {
  // c.f. jQuery.lazyload
  // http://www.appelsiini.net/projects/lazyload
  // https://github.com/tuupola/jquery_lazyload
  var loadImmediate = function(ctx) {
    ctx = ctx || document;
    Array.prototype.forEach.call(ctx.querySelectorAll('img.lazy'), function(img) {
      img.src = img.dataset.original;
    });
  };
  loadImmediate();

  [
    'AutoPatchWork.DOMNodeInserted',
    'AutoPagerize_DOMNodeInserted',
    'AutoPagerAfterInsert'
  ].forEach(function(insert) {
    // TODO debounce / MutationObserver
    document.body.addEventListener(insert, function(evt) {
      loadImmediate(evt.target);
    }, false);
  });
})();