Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

JavaScript

Posted by Stefan Vitasovic
Stefan Vitasovic
13,443 Points

jQuery: if an element is in viewport - do something?

Hey guys! A short one I need answered:

I'm trying to change a class of an element if another element is in the viewport. Can you help me with the jquery syntax?

I think something like:

$('#elementID1').is(":visible").function(){
  $('#elementID2').addClass('new');
}

Doesn't seem to work.

Please help, cheers!

1 Answer

Ryan Duchene
Ryan Duchene
Courses Plus Student 46,022 Points

jQuery's :visible selector is meant for selecting things without display: none, visibility: hidden, etc. I believe you'll have to use a plugin to check for visibility within the viewport; this one seems pretty good.