Create Ajax objects and compatible with multiple browsers _ajax related

Copy Code code as follows:

<script>
function Createajax () {
var Request=false;
There is a XMLHttpRequest in the Window object that is not IE, including (IE7 version above)
if (window. XMLHttpRequest) {
Request=new XMLHttpRequest ();
if (Request.overridemimetype) {
Request.overridemimetype ("Text/xml");
}
The Window object has the ActiveXObject attribute exists is IE
}else if (window. ActiveXObject) {
var versions=[' microsoft.xmlhttp ', ' MSXML. 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{
Request=new ActiveXObject (Versions[i]);
if (request) {
return request;
}
}catch (e) {
Request=false;
}
}
}
return request;
}
var ajax=createajax ();
Alert (AJAX);
</script>