画像のonloadイベントを扱う際のjQuery拡張

jquery.imageload.js

(function($) {
  var imageLoad = function(callback) {
    var src, timestamp;
    src = this.attr('src');
    timestamp = new Date().getTime();
    this.attr({src: src + '?' + timestamp});
    return this.load(callback);
  };
        
  var createImageAndLoad = function(image_path, callback) {
    var createImage = function(image_path) {
      return $('<img />').attr({src: image_path});
    };
          
    if (typeof image_path === 'string') {
      createImage(image_path).imageLoad(callback);
    } else if (typeof image_path === 'object') {
      $.each(image_path, function(i, imgp) {
        createImage(imgp).imageLoad(callback);
      });
    }
  };
        
  $.fn.extend({
    imageLoad: imageLoad
  });
  $.extend({
    imageLoad: createImageAndLoad
  });
})(jQuery);