jQuery get the rendered height of an element?

It should just be

$('#someDiv').height();

with jQuery. This retrieves the height of the first item in the wrapped set as a number.

Trying to use

.style.height

only works if you have set the property in the first place. Not very useful!

Try one of:

var h = document.getElementById('someDiv').clientHeight;
var h = document.getElementById('someDiv').offsetHeight;
var h = document.getElementById('someDiv').scrollHeight;

clientHeight includes the height and vertical padding.

offsetHeight includes the height, vertical padding, and vertical borders.

scrollHeight includes the height of the contained document (would be greater than just height in case of scrolling), vertical padding, and vertical borders.

NON JQUERY since there were a bunch of links using elem.style.height in the top of these answers...

INNER HEIGHT:
https://developer.mozilla.org/en-US/docs/Web/API/Element.clientHeight

document.getElementById(id_attribute_value).clientHeight;

OUTER HEIGHT:
https://developer.mozilla.org/en-US/docs/Web/API/HTMLElement.offsetHeight

document.getElementById(id_attribute_value).offsetHeight; 

Or one of my favorite references: http://youmightnotneedjquery.com/