<select> 默认选中

不多bb，直接上代码

html代码：

<li><span>所属类别</span>
     <select id="cate" name="categoryid">
             <s:iterator value="#session.cateList" var="category"status="stat">
                         <option name="category" value="${id }">${name }</option>
             </s:iterator>
     </select>
 </li>
<li><span>所有者</span>
    <select id="user" name="userid">
            <s:iterator value="#session.vipList" var="user"status="stat">
                        <option name="vip" value="${id }">${username }</option>
            </s:iterator>
    </select>
</li>

js代码：

　　　　 var cateSelected = "${categoryid}";
        var vipSelected = "${userid}";//表示赢选中人的id，从后台传递到页面
        var cat = document.getElementsByName("category");
        var vip = document.getElementsByName("vip");//html代码中所有的option
        for(var i=0;i<cat.length;i++){
            if(cat[i].value == cateSelected){
                cat[i].selected = true;
            }
        }
        for(var i=0;i<vip.length;i++){
            if(vip[i].value == vipSelected){
                vip[i].selected = true;
            }
        }