javascript的ajax实例

请求的页面:

<%@ page language="java" contentType="text/html;charset=gb2312"%>
<html>
<head>
<title>ajax测试01</title>
<script lanauge='javascript'>
var xmlrequest;
xmlrequest=false;
function InitObject()
{
if(!xmlrequest)
{
    xmlrequest=new ActiveXObject("Msxml2.XMLHTTP");//IE6.0的
    if(!xmlrequest)
    {
        xmlrequest=new ActionXObject("Microsof.XMLHTTP");//其他的IE
    //else
    //    xmlrequest=new XMLHttpRequest();//不是IE的
    }
}
}

var url;
function CallServer()
{
if(!xmlrequest)
    InitObject();

if(xmlrequest)
{
    url="GetTime.jsp";
    xmlrequest.open("GET",url,true);
    xmlrequest.onreadystatechange=UpdatePage;
    xmlrequest.send(null);
}
}
function UpdatePage()
{
    if(xmlrequest.readyState==4) //准备好了
    {
        var response=xmlrequest.responseText;
        document.getElementById("labeltime").value=response;
        //document.write(response);
    }
}
function RefreshTime()
{
    CallServer();
}
function init()
{
CallServer();
}
</script>
</head>
<body onload="javascript:init()">
<form name="frm1">
<input type="text" name="labeltime" size=55>
<input type="button" name="refresh" value="刷新" onclick="RefreshTime()">
</form>
</body>
</html>

响应的页面:

<%@ page language="java" contentType="text/html;charset=gb2312"%>
<%
java.util.Date date=new java.util.Date();
out.println("现在时间是："+date.toString());
%>

posted on 2008-09-10 16:38 ringwang 阅读(1677) 评论(0) 编辑收藏举报