<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>ajax.html</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">
<!--<link rel="stylesheet" type="text/css" href="./styles.css">-->
<script type = "text/javascript">
//Ajax中的一个重要对象时XMLHttpRequst.
//声明一个空对象以接受XMLHttpRequest对象
var xmlHttpRequest = null;
function ajaxSubmit () {
//alert (window.ActiveXObject);
if (window.ActiveXObject) {//如果是IE浏览器
xmlHttpRequest = new ActiveXObject ("Microsoft.XMLHTTP");//生成对象
}else if(window.XMLHttpRequest) {//除IE外的其他浏览器实现
xmlHttpRequest = new XMLHttpRequest ();
}
//alert (xmlHttpRequest);
if (null != xmlHttpRequest) {
//1：请求的方式2:请求的资源路径.
xmlHttpRequest.open ("GET","AjaxServlet",true);//准备发送请求（但是没有真实发送请求）
//关联好ajax的回调函数
xmlHttpRequest.onreadystatechange = ajaxCallBack;
//真正的向服务器发送数据
xmlHttpRequest.send ();
}
}
//回调函数
function ajaxCallBack () {
if (xmlHttpRequest.readyState == 4) {
if (xmlHttpRequest.status == 200) {
var responseText = xmlHttpRequest.responseText;
document.getElementById ("content").innerHTML = responseText;
}
}
}
</script>
</head>
<body>
Ajax(Asynchronous Javascript and XML).异步的Javascript与XML
Ajax中的一个重要的对象时XMLHttpRequest
<input type = "button" value = "get content from servlet" onclick = "ajaxSubmit();"/>
<div id = "content">
</div>
</body>
</html>
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>ajax.html</title>
<Meta http-equiv="keywords" content="keyword1,keyword3">
<Meta http-equiv="description" content="this is my page">
<Meta http-equiv="content-type" content="text/html; charset=UTF-8">
<!--<link rel="stylesheet" type="text/css" href="./styles.css">-->
<script type = "text/javascript">
//Ajax中的一个重要对象时XMLHttpRequst.
//主要是微软ie6要处理兼容,6以后包括其他浏览器直接的new就可以
//声明一个空对象以接受XMLHttpRequest对象
var xmlHttpRequest = null;
function ajaxSubmit () {
//alert (window.ActiveXObject);
if (window.ActiveXObject) {//如果是IE浏览器
xmlHttpRequest = new ActiveXObject ("Microsoft.XMLHTTP");//生成对象
}else if(window.XMLHttpRequest) {//除IE外的其他浏览器实现
xmlHttpRequest = new XMLHttpRequest ();
}
//alert (xmlHttpRequest);
if (null != xmlHttpRequest) {
var v1 = document.getElementById ("value1");
var v2 = document.getElementById ("value2");
var param = v1.name+"="+v1.value+"&"+v2.name+"="+v2.value;
//1：请求的方式2:请求的资源路径.
//xmlHttpRequest.open ("GET","AjaxServlet"++"?"+param,true);//准备发送请求（但是没有真实发送请求）
//post 用post提交的时候必须加上xmlHttpRequest.setRequestHeader("Content-type","application/x-www-form-urlencoded");
xmlHttpRequest.open ("POST",true);
xmlHttpRequest.setRequestHeader("Content-type","application/x-www-form-urlencoded");
//关联好ajax的回调函数
xmlHttpRequest.onreadystatechange = ajaxCallBack;
//真正的向服务器发送数据
//GET方式xmlHttpRequest.send (null);
xmlHttpRequest.send (param);
}
}
//回调函数
function ajaxCallBack () {
if (xmlHttpRequest.readyState == 4) {
if (xmlHttpRequest.status == 200) {
var responseText = xmlHttpRequest.responseText;
document.getElementById ("content").innerHTML = document.getElementById ("content").innerHTML + responseText;
}
}
}
</script>
</head>
<body>
Ajax(Asynchronous Javascript and XML).异步的Javascript与XML
Ajax中的一个重要的对象时XMLHttpRequest
<input type = "button" value = "get content from servlet" onclick = "ajaxSubmit();"/>
<input id = "value1" type = "text" name = "value1"/><input id = "value2" type = "text" name = "value2"/>
<div id = "content">
</div>
<input type = "button" value = "hello"/>
<a href = "www.baidu.com">fdf</a>
<form enctype="application/x-www-form-urlencoded"></form>
</body>
</html>
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