用js来解决ajax读取页面乱码

yzxlemon

2010-11-28

例子：
rsajax.js：

代码如下：

var http_request = false; 
function makePOSTRequest(url, parameters) { 
http_request = false; 
if (window.XMLHttpRequest) { 
http_request = new XMLHttpRequest(); 
if (http_request.overrideMimeType) { 
http_request.overrideMimeType('text/html'); 
} 
} else if (window.ActiveXObject) { 
try { 
http_request = new ActiveXObject("Msxml2.XMLHTTP"); 
} catch (e) { 
try { 
http_request = new ActiveXObject("Microsoft.XMLHTTP"); 
} catch (e) {} 
} 
} 
if (!http_request) { 
alert('Cannot create XMLHTTP instance'); 
return false; 
} 
http_request.onreadystatechange = alertContents; 
http_request.open('POST', url, true); 
http_request.setRequestHeader("Content-type", "application/x-www-form-urlencoded"); 
//http_request.setRequestHeader("Content-Type","application/text/html; charset：utf-8"); 
http_request.setRequestHeader("Content-length", parameters.length); 
http_request.setRequestHeader("Connection", "close"); 
if(!Sys.ie){ 
http_request.overrideMimeType("text/html;charset=gb2312"); 
} 
http_request.send(parameters); 
} 
function alertContents() { 
if (http_request.readyState == 4) { 
if (http_request.status == 200) { 
if(Sys.ie){ 
result = http_request.responseBody; 
} 
else 
{ 
result = http_request.responseText; 
} 
//newresult=result.replace(/[^\u0000-\u00FF]/g,function($0){return escape($0).replace(/(%u)(\w{4})/gi,"$2;")}); 
//newreslt=unescape(result.replace(//g,'%u').replace(/;/g,'')); //utf-8和汉字互转，不需要了 
document.getElementById('waiting').innerHTML = ''; 
if(Sys.ie){ 
document.getElementById('showresults').innerHTML =gb2utf8(result); } 
else{ 
document.getElementById('showresults').innerHTML =result; 
} 
} else { 
alert('There was a problem with the request.'); 
} 
}else{ 
document.getElementById('waiting').innerHTML = '<img src="loading.gif">';} 
} 
function get(obj) { 
//var poststr = "accounts=" + encodeURI( document.getElementById("accounts").value ); 
makePOSTRequest('y.htm', ''); 
} 
//ie引入一个杂交函数,nndx 
function gb2utf8(data){ 
var glbEncode = []; 
gb2utf8_data = data; 
execScript("gb2utf8_data = MidB(gb2utf8_data, 1)", "VBScript"); 
var t=escape(gb2utf8_data).replace(/%u/g,"").replace(/(.{2})(.{2})/g,"%$2%$1").replace(/%([A-Z].)%(.{2})/g,"@$1$2"); 
t=t.split("@"); 
var i=0,j=t.length,k; 
while(++i<j) { 
k=t[i].substring(0,4); 
if(!glbEncode[k]) { 
gb2utf8_char = eval("0x"+k); 
execScript("gb2utf8_char = Chr(gb2utf8_char)", "VBScript"); 
glbEncode[k]=escape(gb2utf8_char).substring(1,6); 
} 
t[i]=glbEncode[k]+t[i].substring(4); 
} 
gb2utf8_data = gb2utf8_char = null; 
return unescape(t.join("%")); 
} 
var Sys = {}; 
var ua = navigator.userAgent.toLowerCase(); 
if (window.ActiveXObject) 
Sys.ie = ua.match(/msie ([\d.]+)/)[1] 
else if (document.getBoxObjectFor) 
Sys.firefox = ua.match(/firefox\/([\d.]+)/)[1] 
else if (window.MessageEvent && !document.getBoxObjectFor) 
Sys.chrome = ua.match(/chrome\/([\d.]+)/)[1] 
else if (window.opera) 
Sys.opera = ua.match(/opera.([\d.]+)/)[1] 
else if (window.openDatabase) 
Sys.safari = ua.match(/version\/([\d.]+)/)[1];

index.php

代码如下：

<!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></title> 
<script type="text/javascript" language="javascript" src="rsajax.js"></script> 
<HEAD> 
</head> 
<body> 
<div align="center"> 
<input onclick="javascript:get(document.getElementById('acctform'));" name="acctform" id="acctform" type=button> 
<div align="center"> 
<div id="waiting"></div> 
<p> 
<div id="showresults"></div> 
</div> 
<BR> 
<body></html>

y.htm
我们大家一起来，嘿嘿

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