用JQuery简单实现ajax
创建页面index.htm
代码如下：
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title></title>
<script src="Scripts/jquery-1.4.1.min.js" type="text/javascript"></script>
<script type="text/javascript">
$(function () {
$("#btnSubmit").bind("click", function () {
var username = $("#txtUserName").val();
var userpassword = $("#txtPassword").val();
if (username == "" || userpassword == "") {
$("#demo").html("<span style='color:red;'>对不起，用户名和密码不能为空！</span>");
return;
}
$.get("login.aspx", { username: username, userpassword: userpassword },
function (data) {
if (data == "true") {
$("#demo").html("<span style='color:red;'>恭喜您，登陆成功!</span>");
}
else {
$("#demo").html("<span style='color:red;'>对不起，用户名和密码错误！</span>");
}
});
});
}
);
</script>
</head>
<body>
<div id="demo">
</div>
<table style="">
<tr>
<td>
用户名：</td>
<td>
<input id="txtUserName" type="text" /></td>
</tr>
<tr>
<td>
密码：</td>
<td>
<input id="txtPassword" type="password" /></td>
</tr>
<tr>
<td>
</td>
<td>
<input id="btnSubmit" type="button" value="登陆" /></td>
</tr>
</table>
</body>
</html>
