要如何写勾选A时,B会同步?
<select id="A" name="A" >
<?php
$query = $db->query("
SELECT * FROM `select`");
foreach($query->result() as $row){
?>
<option value="<?php echo $row->id;?>"><?php echo $row->name;?></option>
<?php
}
?>
</select>
<?php
$query = $db->query("
SELECT * FROM `test`");
foreach($query->result() as $row){
?>
<select id="B" name="B[]" >
<?php
$query1 = $db->query("
SELECT * FROM `select`");
foreach($query1->result() as $row){
?>
<option value="<?php echo $row1->id;?>"><?php echo $row1->name;?></option>
<?php
}
?>
</select>
<?php
}
?>
------解决思路----------------------
首先用js控制,a修改时,b也修改。
然后a onchange时,执行一个ajax,更新db