一个请求地址同时引入多个文件是怎么实现的

看到SF头部的JS引入和猪八戒网的CSS引入都是用这种方法引进HTML里，很好得减少了请求次数，请教下各位大大，是如何实现的？效果：

<script src="http://sfault.com/??js/feature/markitup.js,js/feature/simple_modal.js,js/feature/upload_modal.js,js/feature/textarea_resizer.js,js/feature/sfmark.js,js/feature/editable.js,js/feature/autoresize.js,js/feature/tooltip.js,js/feature/prettify.js,js/feature/clipboard.js,js/feature/tokeninput.js,js/feature/ga.js,js/feature/tag_popup.js?12.7.26.1"></script>

<link rel="stylesheet" type="text/css" href="http://t4.zbjimg.com/min/?b=v&amp;f=g.css,base.css,head.css,nav.css,ui-form.css,zbj-index.css,footer.css&amp;v=1.12">