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?'9tgAL1j#(本 文来 源于 我 的学 习网网页设计Javascript教程 htTP://WWw.GZu521.COm]?'9tgAL1j# 源码下载http://www.efish.cn/ajaxss.rar 1<!doctype html public "-//w3c//dtd xhtml 1.0 transitional//en" "http://www.w3.org/tr/xhtml1/dtd/xhtml1-transitional.dtd"> 2<html xmlns="http://www.w3.org/1999/xhtml"> 3<head> 4<meta http-equiv="content-type" content="text/html; charset=gb2312" /> 5<title>无标题文档</title> 6</head> 7 8<body> 9<style type="text/css"> 10<!-- 11body { 12background-color: #ffffff; 13 font-size: 85%; 14 font-family: verdana; 15 margin-top : 10px; 16 margin-left : 10px; 17} 18a:link{color:#3737c8} 19a:active {color: #f00;} 20a:visited {color:#639;} 21--> 22</style> 23<script language="javascript"> 24 var http_request = false; 25 function send_request(url) {//初始化、指定处理函数、发送请求的函数 26 http_request = false; 27 //开始初始化xmlhttprequest对象 28 if(window.xmlhttprequest) { //mozilla 浏览器 29 http_request = new xmlhttprequest(); 30 if (http_request.overridemimetype) {//设置mime类别 31 http_request.overridemimetype(’text/xml’); 32 } 33 } 34 else if (window.activexobject) { // ie浏览器 35 try { 36 http_request = new activexobject("msxml2.xmlhttp"); 37 } catch (e) { 38 try { 39 http_request = new activexobject("microsoft.xmlhttp"); 40 } catch (e) {} 41 } 42 } 43 if (!http_request) { // 异常,创建对象实例失败 44 window.alert("不能创建xmlhttprequest对象实例."); 45 return false; 46 } 47 http_request.onreadystatechange = processrequest; 48 // 确定发送请求的方式和url以及是否同步执行下段代码 49 http_request.open("get", url, true); 50 http_request.send(null); 51 } 52 // 处理返回信息的函数 53 function processrequest() { 54 if (http_request.readystate == 4) { // 判断对象状态 55 if (http_request.status == 200) { // 信息已经成功返回,开始处理信息 56 //alert(http_request.responsetext); 57 document.getelementbyid("result").innerhtml = http_request.responsetext; 58 } else { //页面不正常 59 alert("您所请求的页面有异常。"); 60 } 61 } 62 } |
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