if (4==xmlhttp.readyState){
if (200==xmlhttp.status){
var responseText = xmlhttp.responseText;
alert(responseText);
if (responseText=="yes"){
document.getElementById('div1').innerHTML = "该用户名不能注册,请你更改一个!";
}else{
document.getElementById('div1').innerHTML = "该用户名可以注册"; }
}else{
alert("发生错误!");
}
responseText 在PHP页面传过的值是YES 、NO 如果是YES 则表示用户被占,可是无论传过来是YES 还是NO 都执行
document.getElementById('div1').innerHTML = "该用户名可以注册"; 这是什么原因啊?
if (200==xmlhttp.status){
var responseText = xmlhttp.responseText;
alert(responseText);
if (responseText=="yes"){
document.getElementById('div1').innerHTML = "该用户名不能注册,请你更改一个!";
}else{
document.getElementById('div1').innerHTML = "该用户名可以注册"; }
}else{
alert("发生错误!");
}
responseText 在PHP页面传过的值是YES 、NO 如果是YES 则表示用户被占,可是无论传过来是YES 还是NO 都执行
document.getElementById('div1').innerHTML = "该用户名可以注册"; 这是什么原因啊?
if (4==xmlhttp.readyState){
if (200==xmlhttp.status){
var responseText = xmlhttp.responseText;
alert(responseText);
if (responseText=="yes"){
document.getElementById('div1').innerHTML = "该用户名不能注册,请你更改一个!";
}else{
document.getElementById('div1').innerHTML = "该用户名可以注册"; }
}
}else{
alert("发生错误!");
}
var xmlhttp = false;
try {
xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
} catch (e) {
try {
xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
} catch (e2) {
xmlhttp = false;
}
}
if (!xmlhttp && typeof XMLHttpRequest != 'undefined') {
xmlhttp = new XMLHttpRequest();
}
function checkname(data){
var classname = document.getElementById('classname').value;
xmlhttp.open("GET","ajax.php?classname="+classname,true);
xmlhttp.send(null);
document.getElementById('div1').innerHTML = process_request;//显示状态
xmlhttp.onreadystatechange=function(){
if (4==xmlhttp.readyState){
if (200==xmlhttp.status){
var responseText = xmlhttp.responseText;
alert(responseText);
if (responseText=="yes"){
document.getElementById('div1').innerHTML = "该用户名不能注册,请你更改一个!";
}else{
document.getElementById('div1').innerHTML = "该用户名可以注册";
}
}else{
alert("发生错误!");
}
}
}
}
var process_request = "<img src='./images/loading1.gif' width='16' height='16' border='0' align='absmiddle'>正在数据处理中...";
try {
xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
} catch(e) {
try {
xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
} catch(e2) {
xmlhttp = false;
}
}
if (!xmlhttp && typeof XMLHttpRequest != 'undefined') {
xmlhttp = new XMLHttpRequest();
}
function checkname(data) {
var classname = document.getElementById('classname').value;
xmlhttp.open("GET", "ajax.php?classname=" + classname, true);
xmlhttp.send(null);
document.getElementById('div1').innerHTML = process_request; //显示状态
xmlhttp.onreadystatechange = function () {
if (4 == xmlhttp.readyState) {
if (200 == xmlhttp.status) {
var responseText = xmlhttp.responseText;
alert(responseText);
if (responseText == "yes") {
document.getElementById('div1').innerHTML = "该用户名不能注册,请你更改一个!";
} else {
document.getElementById('div1').innerHTML = "该用户名可以注册";
}
} else {
alert("发生错误!");
}
}
}
}
require("checksession.php");
require("config.php");//配置文件
require(".../.../include/db_class.php"); //连接数据类
require("../../include/function.php");
$classname = $_GET['classname'];
$sql = "select * from category where classname='$classname'";$query=mysql_query($sql);
$rst=mysql_num_rows($query);if ($rst==1)
{
echo 'yes';
}
else
{
echo 'no';
}
?>
处理页面是这样写的
document.getElementById('div1').innerHTML = "该用户名不能注册,请你更改一个!";
}
else {
document.getElementById('div1').innerHTML = "该用户名可以注册";
}
require("checksession.php");
require("config.php");//配置文件
require(".../.../include/db_class.php"); //连接数据类
require("../../include/function.php");
$classname = htmlspecialchars($_GET['classname']);
$sql = "select * from category where classname='$classname'";$query=mysql_query($sql);
$rst=mysql_num_rows($query);if($rst==1)
{
echo "yes";
}else{
echo "no";
}
?>
我也休息了,NND