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/*
// @include     http://omocoro.jp/*
// @include     http://rocketnews24.com/*
// @grant       none
// @run-at      document-end
// @version     2014.10.23
// @homepage    https://gist.github.com/dlwr/39f87b3f07229c7d5ce9
// @downloadURL https://gist.github.com/dlwr/39f87b3f07229c7d5ce9/raw/g-lii.user.js
// @contributor to  https://gist.github.com/to/5334394
// @contributor noromanba  https://gist.github.com/noromanba/d6401655958f3d553589
// @org-license Unknown (as-is)
// @author      dlwr
// @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

(function() {
  // c.f. jQuery.lazyload
  // http://www.appelsiini.net/projects/lazyload
  // https://github.com/tuupola/jquery_lazyload
  var loadImmediate = function(ctx) {
    function immediate(img) {
      img.src =
        img.dataset.original ? img.dataset.original :
        img.dataset.src ? img.dataset.src :
        img.dataset.lazySrc ? img.dataset.lazySrc :
        img.src;
    }
    ctx = ctx || document;
    if (typeof (ctx.querySelectorAll) !== "undefined") {
      if (ctx.nodeName === "IMG") {
        immediate(ctx);
      } else {
        Array.prototype.forEach.call(ctx.querySelectorAll('img'), function(img) {
          immediate(img);
        });
      }
    }
  };
  loadImmediate();

  // c.f. MutationObserver
  // https://developer.mozilla.org/ja/docs/Web/API/MutationObserver
  var observer = new MutationObserver(function(mutations) {
    mutations.forEach(function(mutation) {
      for (var i = 0; i < mutation.addedNodes.length; i++) {
        loadImmediate(mutation.addedNodes[i]);
      }
    });
  });
  observer.observe(document, {childList: true, subtree: true});
})();

@dlwr MutationObserver:cupid: img handling:metal: nice hacks! :+1: