What's the most efficient way to toggle a localStorage value with a bookmarklet?

Question

I have a switch that I'd like to turn on and off in my browser's localStorage using a bookmarklet.

What would be a good bookmarklet for toggling the value of a hard-coded key between "0" and "1"?

Answer 1

javascript:(function(){localStorage["key"]=(localStorage["key"]=="1"?"0":"1")})()

Note that the bookmarklet must be run while the browser is on a page in the domain that owns the localStorage value that you'd like to toggle.