jQuery动态选择器的小例子

<s:iterator value="peList"> 
   <tr class="s1" title="点击修改信息" style="height: 20px;" align="center" onmouseover="changeColor(this);" onmouseout="backColor(this);"> 
     <td width="12%"><input type="checkbox" name=personIDs" value="${personID }"/></td> 
     <td width="30%" id="${personID }" onclick="toUpdate(this.id);"> 
<s:property value="userName"/> 
     </td> 
     <td width="30%" id="${personID }"> 
           <s:property value="personName"/> 
     </td> 
     <td width="28%"> 
           <input type="button" id="${personID }" style="color: red;background-color: yellow;" onclick="toPowerSet(this,this.id);" value="${powerSet }"/> 
     </td></tr> 
</s:iterator>

function toPowerSet(a,id){ 
powerdao.dwrPowerSet(id,function(result){ 
    if(result != "empyt"){ 
        if(result == "admin"){ 
a.value = "管理员"; 
        } 
        if(result == "person"){ 
a.value = "操作员"; 
        } 
    } 
   }); 
}