第一个ajax实例 -

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第一个ajax实例

博客分类：

ajax DOM js
js xhtml dom jsp javaee

第一个ajax实例：

项目图参见附件：

实例源代码：

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>第一个ajax实例</title>

<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="this is my page">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">


<script type="text/javascript">
function ajaxFunction(){

var xmlHttp;
try {
// Firefox, Opera 8.0+, Safari
xmlHttp = new XMLHttpRequest();
} catch (e) {
// Internet Explorer
try {
xmlHttp = new ActiveXObject("Msxml2.XMLHTTP");
} catch (e) {
try {
xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
} catch (e) {
alert("您的浏览器不支持AJAX！");
return false;
}
}
}//第一个catch
xmlHttp.onreadystatechange = function() {
if (xmlHttp.readyState == 4) {
document.getElementById("reuslt").innerHTML = xmlHttp.responseText;
//document.myForm.time.value = xmlHttp.responseText;
}
}
xmlHttp.open("POST", "time.jsp", true);
xmlHttp.send(null);

}//function
</script>
</head>
<body>
<form name="myForm">
用户: <input type="text" name="username" onkeyup="ajaxFunction() ;" />
<br></br>时间: <input type="text" name="time" />
</form>
<div id="reuslt"></div>
</body>
</html>

——————————————————————————————————————

<%@ page language="java" import="java.util.*" pageEncoding="ISO-8859-1"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">

<title>My JSP 'time.jsp' starting page</title>

<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">

</head>

<body>
<%
Date date = new Date();
String time = date.getHours()+":"+date.getMinutes()+":"+date.getSeconds();
//response
out.print(time);
%>

</body>
</html>