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JavaScript

Posted by Konrad Pilch
Konrad Pilch
2,435 Points

How to get bottom with jQuery?

HI, I need to find out how can I get the bottom of an element. In this case I'm trying to find out the height of header, and then get it's bottom, so when the bottom hit's the browser top window, I will show a sub-menu.

heres what i'm currently having

1 Answer

Erik Nuber
Erik Nuber
20,629 Points

Add outerheight() to the top and you have the bottom, relative to the parent element

var el = $('#bottom');  //this would just be your selector
var bottom = el.position().top + el.outerHeight(true);

With absolutely positioned elements or when positioning relative to the document, you need to instead evaluate using an offset:

var bottom = el.offset().top + el.outerHeight(true)

the reason outerHeight(true) is used is that this would take into account the margin as well. (ie content + padding + border+margin). Without using true, you get the (content + padding + border).

Konrad Pilch
Konrad Pilch
2,435 Points

Thank you. I managed to do it :D

codepen

Do you think the code is okay?