How to lock scrolling of a web page temporarily?
html, javascript
Solution
You could set a container element or maybe even the body to `overflow: hidden` with a width and height of the browser window. This way any overflowing content will fall off the page and scroll bars are never displayed. This can be set in a css statement like `body.dialog-open { overflow: hidden; }`. You can then add and remove the `.dialog-open` classname when the dialog opens and closes.
The width and height might not be required if setting this on the body, but I'd have to check browser compatibility on that one. Might get some unexpected results there.
edit: If you want scrolling inside your dialog you can set `overflow: auto` there, with a height set on that element.
Older browsers (most notably IE) might show a horizontal scrollbar as well, you might have to set `overflow-x: hidden` if that is the case.
Also see: CSS div element - how to show horizontal scroll bars only? for more information on scrollbars.
Problem
How can I lock scrolling of a webpage temporarily when a dialog box is displayed ? I have a dialog box within which I want to enable scrolling after deactivating scrolling from the overlayed webpage. Is there a js command to temporarily disable scrolling ?