Ajax 提交内容－POST

Ajax 提交内容－GET
Ajax 提交内容－POST

POST 数据通过 send 的参数来传，关键改动如下：

    xmlhttp.open("POST", "http://www.cftea.com/c/2007/01/FSFTGZA8FSYAI04I/request.asp", true);
    xmlhttp.onreadystatechange = OnReadyStateChng;
    xmlhttp.setRequestHeader("Content-Type", "application/x-www-form-urlencoded"); //这一句是用post方法发送的时候必须写的
    xmlhttp.send("a="+encodeURIComponent("中国人"));

<?xml version="1.0" encoding="gb2312"?>
<!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>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>XMLHTTP</title>
</head>

<body>

<div id="board"></div>

<script type="text/javascript" language="javascript">
<!--
function CreateHTTPObject()
{
    var xmlhttp;
    
    try
    {
        xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
    }
    catch (e)
    {
        try
        {
            xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
        }
        catch (e)
        {
            xmlhttp = false;
        }
    }
    
    if (!xmlhttp && typeof XMLHttpRequest!='undefined')
    {
        try
        {
            xmlhttp = new XMLHttpRequest();
        }
        catch (e)
        {
            xmlhttp=false;
        }
    }
    
    if (!xmlhttp && window.createRequest)
    {
        try
        {
            xmlhttp = window.createRequest();
        }
        catch (e)
        {
            xmlhttp=false;
        }
    }
    
    return xmlhttp;
}


//使用全局变量 xmlhttp
function OnReadyStateChng()
{
    if (xmlhttp.readyState == 0)
    {
        document.getElementById("board").innerHTML = "尚未初始化";
    }
    else if (xmlhttp.readyState == 1)
    {
        document.getElementById("board").innerHTML = "正在加载";
    }
    else if (xmlhttp.readyState == 2)
    {
        document.getElementById("board").innerHTML = "加载完毕";
    }
    else if (xmlhttp.readyState == 3)
    {
        document.getElementById("board").innerHTML = "正在处理";
    }
    else if (xmlhttp.readyState == 4)
    {
        document.getElementById("board").innerHTML = xmlhttp.responseText; //处理完毕
    }
    
}

var xmlhttp = CreateHTTPObject();
if (xmlhttp)
{
    xmlhttp.open("POST", "http://www.cftea.com/c/2007/01/FSFTGZA8FSYAI04I/request.asp", true);
    xmlhttp.onreadystatechange = OnReadyStateChng;
    xmlhttp.setRequestHeader("Content-Type", "application/x-www-form-urlencoded"); //这一句是用post方法发送的时候必须写的
    xmlhttp.send("a="+encodeURIComponent("中国人"));
}
-->
</script>

</body>

</html>

[Ctrl+A 全部选择提示：您可先修改部分代码，再按运行]

同样给出 request.asp 的源代码如下，便于分析。

<%option explicit%><?xml version="1.0" encoding="utf-8"?>
<!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>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>request</title>
</head>

<body>

<%
dim v
for each v in request.Form
response.Write "<p>" & v & "=" & request.Form(v) & "</p>"
next
%>

</body>

</html>

ASP.NET 中的 AJAX	ASP.NET 画图全接触	ASP.NET 与 XML	声明式数据绑定	ASP.NET 网页抓取
C# 基础	C# 类教程	C# 加密	ASP.NET 成员资格	非“自动化”处理 Excel
QuickAjax	Ajax	完美的语法高亮器	Silverlight	Popfly