Javascript equivalent for jquery width()

jQuery uses...

element.getBoundingClientRect().width

internally, it has some other stuff on top to deal with browser differences.

It returns an elements rendered size, where as .offsetxx returns sizes according to the box model.

element.getBoundingClientRect()

Is the most accurate way to get an elements "real" dimensions.

Here is a post by John Resig ( author of jQuery ) on the matter.

• http://ejohn.org/blog/getboundingclientrect-is-awesome/