摘取部分代码：
<tr>
<td align="right">活动名称：</td>
<td align="left">
<select id="activeID" name="activeID">
<option value="">请选择</option>
<{foreach from=$demandOption item=p key=k}>
<option value="<{$p.id}>"><{$p.name}></option>
<{/foreach}>
</select>
</td>
<td align="left" class="tip-error"></td>
</tr>
<tr id="awardList">
<td width="18%" align="right">奖品名称：</td>
<td width="54%" align="left">
<select id="awardID" name="awardID">
</select>
</td>
<td width="28%" align="left" class="tip-error"></td>
</tr>
jquery部分：
<script type="text/javascript">
$(function(){
$("#awardList").hide();
$("#activeID").change(function(){
var aid=$(this).find('option:selected').val();
$.post("index.php?mod=announce&op=AddlotterySerial&action=showList",{aid:aid},function(options){
if(options){
$("#awardList").show();
$("#awardID").html(options);
}
});
});
});
</script>
PHP部分：
if('showList'== $admin->action){
$aid=$_POST['aid'];
$listArr = $Lottery -> announceSelect('id,award', TB_F_LOTTERY_AWARD, "active_id=$aid", 'more');
$options="<option value=''>请选择</option>";
if($listArr){
foreach($listArr as $k=>$v){
$options.="<option value=".$v['id'].">".$v['award']."</option>";
}
}
echo $options;
exit;
}
