我想做的是从选项字段中选择名称，然后在不可编辑字段中显示用户的id。当我选择username，然后在不可编辑字段中显示用户id。这是php中的html:
<form id="reguserform" method="post" action="register.php#err">
<?php
$result = getUnregisteredEmployee();
$result2 = getStatus();
?>
<!-- Username field -->
<select class="empidselectbox" name="username">
<option disabled selected>Username (required)</option>
<?php
while ($row = mysql_fetch_array($result))
{
echo "<option value='".$row[0]."'>$row[0]</option>";
}
mysql_free_result($result);
?>
</select>
<!-- Id field -->
<input type="hidden" name="id" value="ID" />
<input type="text" class="input name" placeholder="ID" name="id" readonly />
<center><input type="submit" class="button small" name="submit" value="Register User"/></center>
</form>
下面是我的查询:
<?php
function getUnregisteredEmployee()
{
global $con;
$sql = "SELECT username, uid FROM `user`";
return @mysql_query($sql,$con);
}
?>
您的文件应该包含以下内容:
<select onchange="id_lookup(this.value)"><option></option></select>
<div class="searchresults"></div>
<script>
function id_lookup(id){
xmlhttp = new XMLHttpRequest(); xmlhttp.open("GET","id-lookup.php?id="+id, false); xmlhttp.send(null); document.getElementById("searchresults").value=xmlhttp.responseText; }
</script>
id-lookup.php:
<?php
// establish connection - add yourself
// run sql and bind the $_GET["id"]
// echo id fields including html input fields
?>
你必须使用Jquery/JavaScript Ajax函数onChange事件来获得所需的输出
下面是jquery Ajax函数:http://api.jquery.com/jquery.ajax/