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<!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>
<title>ajax</title>
<script type="text/javascript"><!--
function Ajax() {
var xmlHttpReq = null;
if (window.XMLHttpRequest) {
xmlHttpReq = new XMLHttpRequest();
} else {
if (window.ActiveXObject) {
var versions = ['Microsoft.XMLHTTP', 'MSXML.XMLHTTP', 'Microsoft.XMLHTTP',
'Msxml2.XMLHTTP.7.0', 'Msxml2.XMLHTTP.6.0',
'Msxml2.XMLHTTP.5.0', 'Msxml2.XMLHTTP.4.0',
'MSXML2.XMLHTTP.3.0', 'MSXML2.XMLHTTP'];
for(var i=0; i<versions.length; i++) {
try {
xmlHttpReq = new ActiveXObject(versions[i]);
if(xmlHttpReq) {
break;
}
} catch(e) {}
}
}
}
var handler = null;
this.invoke = function (mode, url, value, _handler) {
handler = _handler;
if(mode == 'get') {
var querystring = url+'?'+value+'&'+Math.random();
if(window.XMLHttpRequest) {
xmlHttpReq.open('GET', querystring);
xmlHttpReq.onreadystatechange = this.callback;
xmlHttpReq.send(null);
} else {
xmlHttpReq.open('GET', querystring, true);
xmlHttpReq.onreadystatechange = this.callback;
xmlHttpReq.send();
}
}
else if(mode == 'post') {
xmlHttpReq.open('POST', url);
xmlHttpReq.onreadystatechange = this.callback;
xmlHttpReq.setRequestHeader('Content-Type',
'application/x-www-form-urlencoded');
xmlHttpReq.send(value);
}
};
this.callback = function () {
if (xmlHttpReq.readyState == 4) {
if (xmlHttpReq.status == 200) {
handler(xmlHttpReq.responseText);
} else {
alert("请刷新页面！");
}
}
};
}
// 调用示例
new Ajax().invoke(
"get",
"/index.php",
'name=hello',
run
);
function run(response) {
alert(response);
}
// --></script>
</head>
<body>
</body>
</html>
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