title: How to use getEventListeners in Chrome Dev Tool?
body: <p>I tried to trace back which function hooked into a click event of <code>.someclass</code>. I open Chrome Dev Tool and type this</p>
  <pre><code>getEventListeners(document.querySelector('.someclass'));
  </code></pre>
  <p>The result is this</p>
  <p><code>Object {}</code></p>
  <p>I cannot click and open it to find out the name of the object or the source code that handle click event.</p>
  <p>Is there a way to find out?</p>
  <p><strong>UPDATE 1:</strong></p>
  <p>Followed <strong>Krasimir's</strong> advise below. There could be only two events: <code>mousemove</code> or <code>mouseover</code>. So how do I find out the exact function handling that event for <code>canvas.overlay</code>? There are just too many to drill down into.</p>
  <p><img src="https://i.stack.imgur.com/qmfsJ.gif" alt="enter image description here" /></p>