How do you get the rendered height of an element?

Question

How do you get the rendered height of an element?

Let\'s say you have a

element with some content inside. This content inside is going to st

Answer 1

offsetHeight, usually.

If you need to calculate something but not show it, set the element to visibility:hidden and position:absolute, add it to the DOM tree, get the offsetHeight, and remove it. (That's what the prototype library does behind the scenes last time I checked).