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    <p>You can't reliably know what listeners are on an element if you aren't in complete control of the environment. Some libraries manually control event listeners, e.g. jQuery stores them in an object and adds a custom attribute to the element so that when an even occurs, it uses the custom property to look up the listeners for that element and event and calls them. </p> <p>Try:</p> <pre><code>&lt;div id="d0"&gt;div 0&lt;/div&gt; &lt;script type="text/javascript"&gt; var el = document.getElementById('d0') el.addEventListener('click',function(){alert('hey');},false); // Make sure listener has had time to be set then look at property window.setTimeout(function(){alert(el.onclick)}, 100); // null &lt;/script&gt; </code></pre> <p>So to know what listeners have been added, you need to be in complete control.</p> <p><em><strong>Edit:</em></strong></p> <p>To make it clear, there is no <strong>reliable</strong> way to inspect an element with javascript and discover what listeners have been added, or even if any have been added at all. You can create an event registration scheme to track listeners added using your event registration methods. But if listeners are added some other way (e.g. directly by addEventListener) then your registration scheme won't know about them.</p> <p>As pointed out elsewhere, jQuery (and others) can't track listeners that are added directly to elements without using the jQuery event registration methods (click, bind, mouseover, etc.) because they use those methods to register (and call) the listeners.</p>
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    1. POHow do I access what events have been bound to a dom element using only JavaScript, no frameworks
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    1. POHow do I access what events have been bound to a dom element using only JavaScript, no frameworks
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    1. CO@RobG I don't think that jQuery does that. Do you have a source? From my understanding of the jQuery source code, it uses addEventListener internally.
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    2. CO@RobG - Doesn't really answer my question but maybe I wasn't very clear. Just say I wasn't using any libraries and I wanted to write a function that checked to see what events were bound to a particular dom element, passed into my function as an argument. And it had to support DOM Level 1 event model.
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    3. CO@Sime - I'd a be agreeing with you on that one. I kind of ignored that part of the response.
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