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
    Welcome to My New Office

    My first professional web development was at a small print shop where I sat in a windowless cubical all day. I suffered that boxed in environment for almost five years before I was able to find a remote job where I worked from home. The first...

  • By
    Introducing MooTools Templated

    One major problem with creating UI components with the MooTools JavaScript framework is that there isn't a great way of allowing customization of template and ease of node creation. As of today, there are two ways of creating: new Element Madness The first way to create UI-driven...

Incredible Demos

  • By
    Duplicate the jQuery Homepage Tooltips Using Dojo

    The jQuery homepage has a pretty suave tooltip-like effect as seen below: Here's how to accomplish this same effect using Dojo. The XHTML The above HTML was taken directly from the jQuery homepage -- no changes. The CSS The above CSS has been slightly modified to match the CSS rules already...

  • By
    MooTools onLoad SmoothScrolling

    SmoothScroll is a fantastic MooTools plugin but smooth scrolling only occurs when the anchor is on the same page. Making SmoothScroll work across pages is as easy as a few extra line of MooTools and a querystring variable. The MooTools / PHP Of course, this is a...

Discussion

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