yui2到jQuery DOM获取变量Code Translation的值

Question

就像标题所说我试图在jQuery中做到这一点（＆＃34; Groups＆＃34;是ComboBox的ID）：

var groups = YAHOO.util.Dom.get("Groups");
var group = groups[groups.selectedIndex];

var elem_name       = YAHOO.util.Dom.get(group.value+"name");
var elem_members    = YAHOO.util.Dom.get(group.value+"members");

当然var组并不是一个大问题，主要问题是var elem_name＆amp; var elem_members

var groups = $("#Groups")[0];
var group = groups[groups.selectedIndex];

//Does of course not work
var elem_name       = $(group.val()+"name");
var elem_members    = $(group.val()+"members");

使用普通的javascript它可以工作，但我想知道我是如何在jQuery中执行以下操作

var groups = $("#Groups")[0];
var group = groups[groups.selectedIndex];

//normal javascript
var elem_name       = document.getElementById(group.value+"name");
var elem_members    = document.getElementById(group.value+"members");

有什么建议吗？^^