What is the most efficient way to switch the localStorage value using a bookmarklet?

Question

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

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

Answer 1

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

Please note that the bookmarklet should be launched while the browser is on the page in the domain to which the localStorage value that you want to switch belongs.