[前端]-- 实现select自动选择下拉菜单的值

jquery中
function selectOne(){
 var inp=$("#inp").val();
 if(inp=="告知"){
 $('.type option:nth-child(2)').attr('selected','selected');
 }else if(inp=="折扣"){
 $('.type option:nth-child(3)').attr('selected','selected');
 }else if(inp=="通兑"){
 $('.type option:nth-child(4)').attr('selected','selected');
 }else if(inp=="赠品"){
 $('.type option:nth-child(5)').attr('selected','selected');
 }else if(inp=="全场通用"){
 $('.type option:nth-child(6)').attr('selected','selected');
 }else if(inp=="微信"){
 $('.type option:nth-child(7)').attr('selected','selected');
 }else if(inp=="短信活动"){
 $('.type option:nth-child(8)').attr('selected','selected');
 }else {
 $('.type option:last').attr('selected','selected');
 }body中
<td><input type="hidden" id="inp" value="<s:property value='#request.oneImage.hdlx'/>"/><!--获取作用域中的值,用于判断-->
 <select class="type" name="imageInfo.hdlx" style="width:260px" >
 <option>---------请选择-------</option>
 <option value="告知">告知</option>
 <option value="折扣">折扣</option>
 <option value="通兑">通兑</option>
 <option value="赠品">赠品</option>
 <option value="全场通用">全场通用</option>
 <option value="微信">微信</option>
 <option value="短信活动">短信活动</option>
 <option value="换购">换购</option>
 </select>
 </td>