Node isConnected

By  on  

Every so often I discover a property in JavaScript objects that I didn't know existed, oftentimes using another trick to accomplish the same functionality. One such property I just learned about was isConnected, a node property that attached to a context (i.e. document).

Here's how to use Node.prototype.isConnected:

const el = document.createElement('div');
el.isConnected; // false

document.body.appendChild(el);
el.isConnected; // true

I used to run parentNode checks on the element to see if it had been injected but that's not always accurate, so I'm glad isConnected exists!

Recent Features

  • By
    Send Text Messages with PHP

    Kids these days, I tell ya.  All they care about is the technology.  The video games.  The bottled water.  Oh, and the texting, always the texting.  Back in my day, all we had was...OK, I had all of these things too.  But I still don't get...

  • By
    LightFace:  Facebook Lightbox for MooTools

    One of the web components I've always loved has been Facebook's modal dialog.  This "lightbox" isn't like others:  no dark overlay, no obnoxious animating to size, and it doesn't try to do "too much."  With Facebook's dialog in mind, I've created LightFace:  a Facebook lightbox...

Incredible Demos

  • By
    Check All/None Checkboxes Using MooTools

    There's nothing worse than having to click every checkbox in a list. Why not allow users to click one item and every checkbox becomes checked? Here's how to do just that with MooTools 1.2. The XHTML Note the image with the ucuc ID -- that...

  • By
    Link Nudging with CSS3 Animations

    One of the more popular and simple effects I've featured on this blog over the past year has been linking nudging.  I've created this effect with three flavors of JavaScript:  MooTools, jQuery, and even the Dojo Toolkit.  Luckily CSS3 (almost) allows us to ditch...

Discussion

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