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:
JavaScript
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var request = new XMLHttpRequest()
However, if you need to also support Internet Explorer 6 and older, you need to extend your code like this:
JavaScript
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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"); }
See also
License
© 2016 Mozilla Contributors
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-us/docs/web/api/xmlhttprequest/using_xmlhttprequest_in_ie6