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    Using XMLHttpRequest in IE6


    XMLHttpRequest was first introduced by Microsoft in Internet Explorer 5.0 as an ActiveX control. However, in IE7 and other browsers XMLHttpRequest is a native JavaScript object.

    In all modern browsers, you can create a new XMLHttpRequest object using the following code:

    var request = new XMLHttpRequest()

    However, if you need to also support Internet Explorer 6 and older, you need to extend your code like this:

    if (window.XMLHttpRequest) {
        //Firefox, Opera, IE7, and other browsers will use the native object
        var request = new XMLHttpRequest();
    } else {
        //IE 5 and 6 will use the ActiveX control
        var request = new ActiveXObject("Microsoft.XMLHTTP");

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    Contributors to this page: Dikrib, Kohei, kohei.yoshino, Sheppy
    Last updated by: Sheppy,