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copied!<p><strike>There are no events in JQuery to detect css changes.<br> Refer here: <a href="https://stackoverflow.com/questions/2857900/onhide-type-event-in-jquery">onHide() type event in jQuery</a></strike><br> It is possible:</p> <blockquote> <p>DOM L2 Events module defines mutation events; one of them - DOMAttrModified is the one you need. Granted, these are not widely implemented, but are <strong>supported in at least Gecko and Opera</strong> browsers.<br> Source: <a href="https://stackoverflow.com/questions/1397251/event-detect-when-css-property-changed-using-jquery">Event detect when css property changed using Jquery</a> </p> </blockquote> <p>Without events, you can use <code>setInterval</code> function, like this:</p> <pre><code>var maxTime = 5000, // 5 seconds startTime = Date.now(); var interval = setInterval(function () { if ($('#element').is(':visible')) { // visible, do something clearInterval(interval); } else { // still hidden if (Date.now() - startTime > maxTime) { // hidden even after 'maxTime'. stop checking. clearInterval(interval); } } }, 100 // 0.1 second (wait time between checks) ); </code></pre> <p>Note that using <code>setInterval</code> this way, for keeping a watch, may affect your page's performance.</p> <p><strong>7th July 2018:</strong><br> Since this answer is getting some visibility and up-votes recently, here is additional update on detecting css changes: </p> <p>Mutation Events have been now replaced by the more performance friendly Mutation Observer.</p> <blockquote> <p>The MutationObserver interface provides the ability to watch for changes being made to the DOM tree. It is designed as a replacement for the older Mutation Events feature which was part of the DOM3 Events specification. </p> </blockquote> <p>Refer: <a href="https://developer.mozilla.org/en-US/docs/Web/API/MutationObserver" rel="nofollow noreferrer">https://developer.mozilla.org/en-US/docs/Web/API/MutationObserver</a></p>

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