html jsp 动态引用js css

// 通用js和css
(function (){
var strFullPath=window.document.location.href;
var strPath=window.document.location.pathname;
var pos=strFullPath.indexOf(strPath);
var prePath=strFullPath.substring(0,pos);
var postPath=strPath.substring(0,strPath.substr(1).indexOf('/')+1);
var appRootPath = prePath+postPath;
var jsHeader = "<script type='text/javascript' src='" + appRootPath + "/";
var jsFooter = "'></script>";
document.write(jsHeader + "common/js/jquery-1.12.3.js" + jsFooter);
document.write(jsHeader + "common/js/common.js" + jsFooter);
document.write(jsHeader + "layui/src/layui.js" + jsFooter);
document.write(jsHeader + "layui/src/layui-xtree.js" + jsFooter);
document.write(jsHeader + "common/js/user_input_validation_util.js" + jsFooter);
document.write(jsHeader + "common/js/page_util.js" + jsFooter);

var cssHeader = "<link rel='stylesheet' type='text/css' href='" + appRootPath + "/";
var cssFooter = "'></link>";
document.write(cssHeader + "layui/src/css/layui_1366.css" + cssFooter);
})();