简单示例：AJAX结合PHP代码实现登录,简单示例：AJAX结合PHP代码实现登录
【 tulaoshi.com - PHP 】
【PHPChina讯】 javascript:tagshow(event, 'HTML');" href="javascript:;" target=_self>HTML部分：
<html
<head
<scrīpt language="javascrīpt"
function postRequest(strURL){
var xmlHttp;
if(window.XMLHttpRequest){ // For Mozilla, Safari, ...
var xmlHttp = new XMLHttpRequest();
}
else if(window.ActiveXObject){ // For Internet Explorer
var xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
}
xmlHttp.open('POST', strURL, true);
xmlHttp.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
xmlHttp.onreadystatechange = function(){
if (xmlHttp.readyState == 4){
updatepage(xmlHttp.responseText);
}
}
xmlHttp.send(strURL);
}
function updatepage(str){
if(str=="yes"){
alert("Welcome User");
}else{
alert("Invalid Login! Please try again!");
}
}
function call_login(){
var username = window.document.f1.username.value;
var password = window.document.f1.password.value;
var url = "login.php?username=" + username + "&password=" +password ;
postRequest(url);
}
</scrīpt
</head
<body
<Center
<form name="f1" ōnSubmit="return call_login();"
<table border="0" bgcolor="#CCCCCC" cellspacing="1" cellpadding="3" width="316"
<tr
<td align="left" colspan="2"<b<font size="5" color="#000080"Login</font</b</td
</tr
<tr
<td align="right" width="124"<b<font color="#000080"User
Name:</font</b</td
<td width="177"<input type="text" name="username" id="user" size="20" value="" /</td
</tr
<tr
<td align="right" width="124"<b<font color="#000080"Password:</font</b</td
<td width="177"<input type="password" name="password" size="20" value="" /</td
</tr
<tr
<td colspan="2" align="center"<input type="button" name="a1" value="Login" ōnClick="call_login()"</td
</tr
</table
</form
</center
</body
</html
PHP脚本部分login.php：
（本文来源于图老师网站，更多请访问http://www.tulaoshi.com/php/）<?
$username=$_GET["username"];
$password=$_GET["password"];
if($username=="admin" && $password=="admin"){
echo "yes";
}else{
echo "No";
}
?
原文地址：
来源:http://www.tulaoshi.com/n/20160129/1489924.html
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