screen.width and screen.availwidth difference in javascript

javascript width screen-resolution
SilverLight picture SilverLight · Mar 28, 2011 · Viewed 15.2k times · Source

What is the difference between screen.width and screen.availwidth in JavaScript?

On my system both are the same!

Answer

alex picture alex · Mar 28, 2011

Some things block some of your viewport, such a history/bookmarks side panel. This includes the taskbar, unless it's on Autohide

Then window.screen.width != window.screen.availWidth. :)

If you are drawing things to the viewport, you ought to use availWidth / availHeight to determine if things are off the viewport etc. Be sure to recalculate on window resize otherwise you won't know when the sidepanel has been closed.

Note that not all of the width given by this property may be available to the window itself. When other widgets occupy space that cannot be used by the window object, there is a difference in window.screen.width and window.screen.availWidth.

Source.

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