//addche.php
<?php
include_once('../func.php');
?>
<html>
<head>
<title>增加文章</title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<scrīpt type="text/javascrīpt" src="ajax.js"></scrīpt>
<LINK href="images/mystyle.css" type=text/css rel=StyleSheet>
</head>
<body bgcolor="#FFFFFF" text="#000000" marginwidth="0" marginheight="0">
<br>
<table width="609" border="0" cellspacing="1" cellpadding="1" height="8" bgcolor="#3399CC" align="center">
<tr>
<td width="226" height="25"><b><font color="#FFFFFF"> 车型号管理【大类，小类】</font></b></td>
<td width="356"> </td>
</tr>
</table>
<table width="609" border="0" cellspacing="1" cellpadding="4" bgcolor="#99ccff" height="130" align="center">
<form name="FORM" method="post" action="addchexing.php">
<tr bgcolor="#f2f8ff">
<td width="57">型 号：</td>
<td width="533"><select id="state" name="state" ōnChange="getcity()">
<?php
$selectbg = "select * from chexing";
$bgresult = selectfun($selectbg);
while($myrow = $bgresult->fetch_assoc()){
echo "<option value=".$myrow['id'].">".$myrow['bgtype']."</option>";
}
?>
</select>
<select name="city" id="city">
<option value="">please select state first</option>
</select> <input type="text" name="textfield3"></td>
</tr>
<tr bgcolor="#f2f8ff">
<td> </td>
<td><input type="submit" name="addks" value="提交">
<input type="reset" name="Submit7" value="重置"></td>
</tr>
</form>
</table>
</body>
</html>//ajax.js
var xmlHttp = createXmlHttpRequestObject();
function createXmlHttpRequestObject(){
var xmlHttp;
try{
xmlHttp = new XMLHttpRequest();
}
catch(e)
{
var XmlHttpVersions = new Array("MSXML2.XMLHTTP.6.0",
"MSXML2.XMLHTTP.5.0",
"MSXML2.XMLHTTP.4.0",
"MSXML2.XMLHTTP.3.0",
"MSXML2.XMLHTTP",
"Microsoft.XMLHTTP");
for (var i=0; i<XmlHttpVersions.length && !xmlHttp; i++) {
try {
xmlHttp = new ActiveXObject(XmlHttpVersions[i]);
}
catch (e) {}
}
}
if (!xmlHttp)
alert("Error creating the XMLHttpRequest object.");
else
return xmlHttp;
}function getcity(){
var selectObj = document.getElementById("state");
var url = "ajax_city.php?stateid=" +escape(selectObj.options[selectObj.selectedIndex].value);
xmlHttp.open("GET", url, true);
xmlHttp.onreadystatechange = getcityOk;
xmlHttp.send(null);
}function getcityOk(){
if (xmlHttp.readyState == 4) {
var response = xmlHttp.responseText;
try{
var classObj = document.getElementById("city");
//classObj.innerHTML=response; // 开始的写法，但无论如何也传不到页面中去！→
classObj.outerHTML=response;
}
catch(exception){}
}
}
//ajax_city.php
<?php
include('../func.php');
$stateid=$_GET['stateid'];
$citysql = "select * from midchexing where parentid=$stateid";
$city=selectfun($citysql);
echo "<select name=\"city\">";
while($myrow = $bgresult->fetch_assoc()){
echo "<option value=".$myrow['id'].">".$myrow['midname']."</option>";
}
echo "</select>";
?>
//func.php
<?php
function getconn(){
$servername = "localhost";
$username = "root";
$password = "";
$dbname = "car";
$conn = new mysqli($servername,$username,$password,$dbname);
if(!$conn){
die("链接数据库出现错误！");
}
else
return $conn;
}
function insertfun($sql){
$conn = getconn();
$conn->query("SET character_set_connection=gbk, character_set_results=gbk, character_set_client=binary");
if (!$conn->query($sql)) {
echo die("插入失败！");
}
}
function selectfun($sql){
$conn = getconn();
$conn->query("SET NAMES 'gb2312'");
$result = $conn->query($sql);
if(!$result){
die("不能读出数据");
}else
return $result;
}
function login($username,$pass){
$conn = getconn();
$sql = "select * from user where username='$username' and password='$pass'";
$result = selectfun($sql);
if(!$result){
throw new Exception("登录失败！请您输入正确的用户名和密码！");
}
if ($result->num_rows > 0) {
return true;
}else {
throw new Exception("用户名或密码错误，请重新输入！");
}
}
?>
第一个列表有，但联动不了第二个！各位大虾帮看看！比较急！！！！！！！！！！！！！！！！！！！！！！！！！！！！！超级谢谢了！
http://topic.csdn.net/u/20080319/10/1163a757-f29c-4555-8def-1acd120c7eb4.html
这里有附件，看一下是怎么联动的http://topic.csdn.net/u/20080318/21/bc41555c-c834-4f42-9ee0-6835ef8686d7.html
http://topic.csdn.net/u/20080319/11/b3b7f6dc-3284-4e03-be55-d31f1c268fdc.html
function getcityOk(){
if (xmlHttp.readyState == 4) {
if(xmlHttp.status==200){//是不是少了这个啊。
var response = xmlHttp.responseText;
try{
var classObj = document.getElementById("city");
//classObj.innerHTML=response; // 开始的写法，但无论如何也传不到页面中去！→
classObj.outerHTML=response;
}
catch(exception){}
}
}
}
如果返回值正确，应该显示