Just disable scroll not hide it?

I’m trying to disable the html/body scrollbar of the parent while I’m using a lightbox. The main word here is disable. I do not want to hide it with overflow: hidden;.

The reason for this is that overflow: hidden makes the site jump and take up the area where the scroll was.

I want to know if its possible to disable a scrollbar while still showing it.

Answer

If the page under the overlayer can be “fixed” at the top, when you open the overlay you can set

body { position: fixed; overflow-y:scroll }

you should still see the right scrollbar but the content is not scrollable. When you close the overlay just revert these properties with

body { position: static; overflow-y:auto }

I just proposed this way only because you wouldn’t need to change any scroll event

Update

You could also do a slight improvement: if you get the document.documentElement.scrollTop property via javascript just before the layer opening, you could dynamically assign that value as top property of the body element: with this approach the page will stand in its place, no matter if you’re on top or if you have already scrolled.

Css

.noscroll { position: fixed; overflow-y:scroll }

JS

$('body').css('top', -(document.documentElement.scrollTop) + 'px')
         .addClass('noscroll');

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