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function byphp(){
var byphp100=xmlHttp.responseText;
if(/用户/.test(byphp100))
document.getElementById('userInfo').innerHTML=byphp100;
else
document.getElementById('passInfo').innerHTML=byphp100;
}
// JavaScript Document
var xmlHttp;
function S_xmlhttprequest(){
if(window.ActivXObject){
xmlHttp=new ActiveXObject('Mcrosoft.XMLHTTP');
}else if(window.XMLHttpRequest){
xmlHttp=new XMLHttpRequest;
}
}
function php100(){
S_xmlhttprequest();
user=document.myform.user.value;
pwd=document.myform.pwd.value;
var postStr = 'user='+ user+'&pwd='+pwd;
xmlHttp.open('POST','login3.php',true);
//定义传输的文件HTTP头信息
xmlHttp.onreadystatechange=byphp;
xmlHttp.setRequestHeader('Content-Type','application/x-www-form-urlencoded');
//发送POST数据
xmlHttp.send(postStr);
}
function byphp(){
var byphp100=xmlHttp.responseText;
document.getElementById('userInfo').innerHTML=byphp100;
}// JavaScript Document// JavaScript Document
form name="myform" method="post" action="">
用户名:<input type="text" name="user" value="" size=10;/> <br>
密 码:<input type="password" name="pwd" value="" size=10;/> <br>
<input type="button" name="button" value="登陆" onclick="php100();"/>
</form>
<div id="userInfo"></div>
<div id="passInfo"></div>
<?php
$username=$_POST['user']; //获取用户编号
$password=$_POST['pwd']; //获取密码编号
if($username=='09430102'){
echo "用户名正确";
}else{
echo "用户名不正确";
}
if($password=='my0917'){
echo "密码正确";
}else{
echo "密码错误";
}
?>