<script src="http://modernizr.com/downloads/modernizr-2.6.2.js"></script>
<dl>
<dt>Does this brower support <abbr title="Asynchronous JavaScript and XML">AJAX</abbr>?</dt>
<dd>No, it doesn't.</dd>
</dl>
JavaScript
// AJAX
// https://github.com/Modernizr/Modernizr/issues/734
Modernizr.addTest('ajax', function() {
var xhr = new XMLHttpRequest();
return !!('onprogress' in xhr);
});
//will change the dd text only if "ajax" is appended (by Modernizr) to the HTML class attribute.
$('.ajax dd').html('Yes, it does.');
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