Inspect jQuery Element Events

By  on  

Building on top of other tools can be incredibly difficult, especially when you didn't create the other tool and you can't replace that tool.  And when those other tools create loads of event listeners, you sometimes see odd behavior within the page and have no idea what the hell is going on.  Unfortunately a large part of client side coding and library usage comes down to fighting your own tools.

Luckily jQuery allows you inspect events that have been registered to a given element!  Here's the magic:

// First argument is the element you want to inspect
jQuery._data(document.body, "events");

jQuery Events

What's returned is an object whose keys represent the event names and the values are arrays of event handles that have been registered to the element and in the order they were registered.  You can even inspect the function URL location and its contents, then allowing you to see what code is messing with your page.  And then, after you've cursed out the other tool, you can monkey patch the problematic function.

Event listeners can really cause debugging misdirection within JavaScript, especially when you aren't an expert with a given framework.  Take the time to learn to leverage as many helper methods as you can -- they will save you hours of frustration.

Recent Features

  • By
    Animated 3D Flipping Menu with CSS

    CSS animations aren't just for basic fades or sliding elements anymore -- CSS animations are capable of much more.  I've showed you how you can create an exploding logo (applied with JavaScript, but all animation is CSS), an animated Photo Stack, a sweet...

  • By
    JavaScript Promise API

    While synchronous code is easier to follow and debug, async is generally better for performance and flexibility. Why "hold up the show" when you can trigger numerous requests at once and then handle them when each is ready?  Promises are becoming a big part of the JavaScript world...

Incredible Demos

  • By
    Style Textarea Resizers

    Modern browsers are nice in that they allow you to style some odd properties.  Heck, one of the most popular posts on this blog is HTML5 Placeholder Styling with CSS, a tiny but useful task.  Did you know you can also restyle the textarea resizer in WebKit...

  • By
    9 Mind-Blowing Canvas Demos

    The <canvas> element has been a revelation for the visual experts among our ranks.  Canvas provides the means for incredible and efficient animations with the added bonus of no Flash; these developers can flash their awesome JavaScript skills instead.  Here are nine unbelievable canvas demos that...

Discussion

    Wrap your code in <pre class="{language}"></pre> tags, link to a GitHub gist, JSFiddle fiddle, or CodePen pen to embed!