jQuery .css（'margin-left'）在IE7和IE8中返回“自动”

Question

I'm trying to get the margin-left value of an element. This works fine in Chrome, FireFox & IE9 but in IE7 and IE8 I get "auto" back:

alert($('#'+page+'menubuttoncontainer').css('margin-left').replace('px', ''));

How can I get a number back instead of "auto"?

Answer 1

.css return the value of the CSS.

In order to get the position, you should use the offsets functions: http://api.jquery.com/offset/

Or the position function: http://api.jquery.com/position/