function getUrlParam(name) {var reg = new RegExp("(^|&)" + name + "=([^&]*)(&|$)"); //构造一个含有目标参数的正则表达式对象var r = window.location.search.substr(1).match(reg); //匹配目标参数if (r != null) return decodeURI(r[2]);return null; //返回参数值}/*调用方法*/var id = getUrlParam("id");