为什么这段代码,只支持IE,谷歌浏览器为什么打不开呢?求指导啊!
<html>
<head>
<script type="text/javascript">
var xmlhttp;
function loadXMLDoc(url)
{
xmlhttp=null;
if (window.XMLHttpRequest)
{// code for IE7, Firefox, Opera, etc.
xmlhttp=new XMLHttpRequest();
}
else if (window.ActiveXObject)
{// code for IE6, IE5
xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
}
if (xmlhttp!=null)
{
xmlhttp.onreadystatechange=state_Change;
xmlhttp.open("GET",url,true);
xmlhttp.send(null);
}
else
{
alert("Your browser does not support XMLHTTP.");
}
}function state_Change()
{
if (xmlhttp.readyState==4)
{// 4 = "loaded"
if (xmlhttp.status==200)
{// 200 = "OK"
document.getElementById('A1').innerHTML=xmlhttp.status;
document.getElementById('A2').innerHTML=xmlhttp.statusText;
document.getElementById('A3').innerHTML=xmlhttp.responseText;
}
else
{
alert("Problem retrieving XML data:" + xmlhttp.statusText);
}
}
}
</script>
</head><body>
<h2>Using the HttpRequest Object</h2><p><b>Status:</b>
<span id="A1"></span>
</p><p><b>Status text:</b>
<span id="A2"></span>
</p><p><b>Response:</b>
<br /><span id="A3"></span>
</p><button onclick="loadXMLDoc('http://www.baidu.com')">Get XML</button></body>
</html>
xmlhttprequestjavascript
<html>
<head>
<script type="text/javascript">
var xmlhttp;
function loadXMLDoc(url)
{
xmlhttp=null;
if (window.XMLHttpRequest)
{// code for IE7, Firefox, Opera, etc.
xmlhttp=new XMLHttpRequest();
}
else if (window.ActiveXObject)
{// code for IE6, IE5
xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
}
if (xmlhttp!=null)
{
xmlhttp.onreadystatechange=state_Change;
xmlhttp.open("GET",url,true);
xmlhttp.send(null);
}
else
{
alert("Your browser does not support XMLHTTP.");
}
}function state_Change()
{
if (xmlhttp.readyState==4)
{// 4 = "loaded"
if (xmlhttp.status==200)
{// 200 = "OK"
document.getElementById('A1').innerHTML=xmlhttp.status;
document.getElementById('A2').innerHTML=xmlhttp.statusText;
document.getElementById('A3').innerHTML=xmlhttp.responseText;
}
else
{
alert("Problem retrieving XML data:" + xmlhttp.statusText);
}
}
}
</script>
</head><body>
<h2>Using the HttpRequest Object</h2><p><b>Status:</b>
<span id="A1"></span>
</p><p><b>Status text:</b>
<span id="A2"></span>
</p><p><b>Response:</b>
<br /><span id="A3"></span>
</p><button onclick="loadXMLDoc('http://www.baidu.com')">Get XML</button></body>
</html>
xmlhttprequestjavascript
比如php
$html= file_get_contents('http://www.baidu.com/');
echo $html;