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方法一：

<select  onchange="goUrl(this.options[this.selectedIndex]);">  

<option>==</option>  

<option  value='http://www.csdn.net'  target="_blank">csdn</option>    

<option  value='http://www.163.com'  target="_self">163.com</option>  

</select>  

<script>  

function  goUrl(obj){  

if(obj.target=='_blank')window.open(obj.value);  

if(obj.target=='_self')location.href=obj.value;  

}  

</script>

方法二：

select頁面跳轉(zhuǎn)及獲值

<selectonchange="window.location.href=this.options[selectedIndex].value">

   <option value="http://www.google.com">谷歌</option>

   <option value="http://www.yahoo.com">雅虎</option>

   <option value="http://www.baidu.com">百度</option>

</select>

ASP調(diào)用方法：

  <select onchange="window.open(this.options[this.selectedIndex].value)">
         <option value="" selected="selected">--請選擇--</option>
        <%set rsxw=server.CreateObject("adodb.recordset")
     rsxw.open"select top 6 * from (select * from xw where xwlb_id=10 order by tjsj desc)",cn,1,3
     for j=1 to rsxw.recordcount
     %>
   <option value="<%=rsxw("lj")%>" target="_blank"><%=rsxw("xwbt")%></option>
   <%rsxw.next
   next
   rsxw.close
   set rsxw=nothing%>

</select>