$.extend({ includePath: '', include: function(file) { var files = typeof file == "string" ? [file]:file; for (var i = 0; i < files.length; i++) { var name = files[i].replace(/^\s|\s$/g, ""); var att = name.split('.'); var ext = att[att.length - 1].toLowerCase(); var isCSS = ext == "css"; var tag = isCSS ? "link" : "script"; var attr = isCSS ? " type='text/css' rel='stylesheet' " : " language='javascript' type='text/javascript' "; var link = (isCSS ? "href" : "src") + "='" + $.includePath + name + "'"; if ($(tag + "[" + link + "]").length == 0) document.write("<" + tag + attr + link + "></" + tag + ">"); } } }); //使用方法 $.includePath = 'http://hi.baidu.com/javascript/'; $.include(['json2.js', 'jquery.tree.js', 'jquery.tree.css']);