How to create an XMLHttpRequest object

Method 1: Recommended

// Create a Boolean variable

Var xmlhttp = false;

// Check whether IE browser is used

Try {

// If the JS version is later than 5

Xmlhttp = new ActiveXObject ("Msxml2.XMLHTTP ");

Alert ("You are using Microsoft Internet Explorer .");

} Catch (e ){

// If not, ActiveX objects of earlier versions are used.

Try {

// If you are using IE

Xmlhttp = new ActiveXObject ("Microsoft. XMLHTTP ");

Alert ("You are using Microsoft Internet Explorer .");

} Catch (e ){

// Use a non-IE browser

Xmlhttp = false;

}

}

// If you are using an IE non-Browser

If (! Xmlhttp & typeof XMLHttpRequest! = Undefined ){

Xmlhttp = new XMLHttpRequest ();

Alert ("You are not using Microsoft Internet Explorer .");

}

Method 2:

Var xmlhttp;
// If ActiveX objects are available, you must use IE browser.
(! Window. ActiveXObject ){
Xmlhttp = new ActiveXObject ("Microsoft. XMLHTTP ");
} Else {
// Use Javascript for processing
Xmlhttp = new XMLHttpRequest ();
}