2020-02-16 标签:javascript,函数,实现,代码,如下,copyright,c,2007,2009,skylark,email,aohailin,gmail,com,version,原创

实现代码如下：/* * Copyright (C) 2007-2009 skylark * Email:aohailin@gmail.com * Version:2.1 * 原创程序,转载请保留版权 */ var $=function(o){return typeof o=="string"?doc