- <p><em>Note: Although <code>ui.ajaxSettings</code> is provided and can be modified, some of these properties have already been processed by jQuery. For example, <a href="//api.jquery.com/jQuery.ajaxPrefilter/">prefilters</a> have been applied, <code>data</code> has been processed, and <code>type</code> has been determined. The <code>beforeLoad</code> event occurs at the same time, and therefore has the same restrictions, as the <code>beforeSend</code> callback from <a href="//api.jquery.com/jQuery.ajax/"><code>jQuery.ajax()</code></a>.</em></p>
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