Posted about 9 years ago. Visible to the public.

Check whether an element is visible or hidden with Javascript

jQuery

You can say:

Copy
$(element).is(':visible')

and

Copy
$(element).is(':hidden')

jQuery considers an element to be visible if it consumes space in the document. For most purposes, this is exactly what you want.

Native DOM API

Emulate jQuery's implementation :

Copy
element.offsetWidth > 0 && element.offsetHeight > 0;

jQuery > 3

Query 3 slightly modifies the meaning of :visible (and therefore of :hidden).

Emulate jQuery's implementation:

Copy
!(window.getComputedStyle(element).display === "none")

Prototype

Don't use Element#visible(), it just checks if a CSS attribute display: none exists. This is too naive for most cases.

Emulate jQuery's implementation instead:

Copy
element.offsetWidth > 0 && element.offsetHeight > 0;

Or maybe you'd even like to patch Prototype so it behaves like jQuery:

Copy
Element.addMethods({ visible: function() { return offsetWidth > 0 && offsetHeight > 0; } });

Once an application no longer requires constant development, it needs periodic maintenance for stable and secure operation. makandra offers monthly maintenance contracts that let you focus on your business while we make sure the lights stay on.

Owner of this card:

Avatar
Henning Koch
Last edit:
20 days ago
by Julian
About this deck:
We are makandra and do test-driven, agile Ruby on Rails software development.
License for source code
Posted by Henning Koch to makandra dev
This website uses short-lived cookies to improve usability.
Accept or learn more