Result jQuery (function($) { $.fn.fullClip = function(options) { //デフォルト設定 var settings = $.extend({ current: 0, images: [], transitionTime: 1000, wait: 3000, static: false }, options); // 画像プリロード var i, end; for (i = 0, end = settings.images.length; i < end; ++i) { new Image().src = settings.images[i]; } // 背景指定するCSS $('.fullBackground') .css('background-image', 'url(' + settings.images[settings.