jquery offset method doesn't seem to return whole numbers

When using jquery's offset method on an element to get its top offset from the document, it returns m开发者_运维知识库e the following for example:

1150.3999938964844

Is there a reason why it does that, and doesn't return a whole number?

Thanks

If it has any dimensions defined as percentages (or any parent does really, unless it's out of the flow) for instance....there's no guarantee it's a whole number :)

Is there a reason why it does that, and doesn't return a whole number?

jQuery.fn.offset = function( options ) {

...

parseFloat( ... )

...

• jQuery source

See also: Floating Point Accuracy Problems at Wikipedia