script裡

<script type="text/javascript">
$(document).ready(function(){  
     var key=$("#selectRefundReason").val();
     //根據值讓option選中 
     $("#refundReason option[value='"+key+"']").attr("selected","selected"); 
}); 
</script>

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div裡

<td align="center" style="background-color: #E7F3FB; 
vertical-align: middle;"
 
 width="20%" height="50px">
<font>原因：</font>
</td>
<td align="left" style="vertical-align: middle;">
  <input type="hidden" id ="selectRefundReason" value="${後臺傳來的值}"/>
    <select class="easyui-combobox"  name="refundReason" id="refundReason"
    style="resize: none" data-options
 
="width:220,height:30,editable:false,panelHeight:'auto'">
        <c:forEach items="${refundReasonList後臺傳來的鍵值對集合}" var="each">
            <option value="${each.dataKey}">${each.dataValue}</option>
        </c:forEach>
    </select>
</td>

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簡單情況下

<th
 
>是否共享航班</th>
<td>
<input id="codeShareValue" type="hidden" class="span2"  value="${後臺傳來的值}" >    
<select name="codeShare" id="codeShare" class="easyui-validatebox span2">
<option value="0">否</option>
<option value="1">是</option>
</select>
</td>

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 $(document).ready(function(){ 
    var Flag=$("#codeShareValue").val();
    //alert(Flag);
    //根據值讓option選中 
    if(Flag=="0"){
        $("#codeShare option[value='"+Flag+"']").attr("selected","selected");
    }else if(Flag=="1"){
        $("#codeShare option[value='"+Flag+"']").attr("selected","selected");
    }
}); 

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var level_id=$("#level_id").val();
var group_id=$("#group_id").val();
var status = ${memberLevelPrizeGroupRel.status};
//根據值讓option選中
$("#levelId option[value='"+level_id+"']").attr("selected","selected");
$("#groupId option[value='"+group_id+"']").attr("selected","selected");
if (status){
        $("#status").attr("checked",true);//打勾
}