Document.elementFromPoint

By  on  

Reacting to events with JavaScript is the foundation of a dynamic experiences on the web. Whether it's a click event or another typical action, responding to that action is important. We started with assigning events to specific elements, then moved to event delegation for efficiency, but did you know you can identify elements by position on the page? Let's look at document.elementFromPoint and document.elementsFromPoint.

The document.elementFromPoint method accepts x and y parameters to identify the top-most element at a point:

const element = document.elementFromPoint(100, 100);
// 

If you want to know the entire element stack, you can use document.elementsFromPoint:

const elements = document.elementsFromPoint(100, 100);
// [
, , ]

The elementFromPoint and elementsFromPoint are really helpful for experiences where developers don't want to assign individual events. Games and entertainment sites could benefit from these functions. How would you use them?

Recent Features

Incredible Demos

  • By
    MooTools Font-Size Scroller with Cookie Save

    Providing users as many preferences as possible always puts a smile on the user's face. One of those important preferences is font size. I can see fine but the next guy may have difficulty with the font size I choose. That's why...

  • By
    Modal-Style Text Selection with Fokus

    Every once in a while I find a tiny JavaScript library that does something very specific, very well.  My latest find, Fokus, is a utility that listens for text selection within the page, and when such an event occurs, shows a beautiful modal dialog in...

Discussion

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