title: How can I identify what element has the click event and its source code, even it's attached dynamically, ideally in the debugger?
body: <p>On a website, when I click a button, it pop a window.</p>
  <p>When I inspect the button, it's a DIV embedded in another Div and then another Div.</p>
  <p>How can I identify which element has the click event and its source code?</p>
  <p>How can I find the place of the source code in the debugger of the browser?</p>