Macha Macha - 1 month ago 8
Javascript Question

How do I check if an element is really visible with JavaScript?

In JavaScript, how would you check if an element is actually visible?

I don't just mean checking the

visibility
and
display
attributes. I mean, checking that the element is not


  • visibility: hidden
    or
    display: none

  • underneath another element

  • scrolled off the edge of the screen



For technical reasons I can't include any scripts. I can however use Prototype as it is on the page already.

Answer

For the point 2.

I see that no one has suggested to use document.elementFromPoint(x,y), to me it is the fastest way to test if an element is nested or hidden by another. You can pass the offsets of the targetted element to the function.

Here's PPK test page on elementFromPoint.