(function(){})() vs. !function(){}()

Question

In jQuery javascript code I see

(function(window, undefined) {
})(window);

And in Twitter

!function(window, undefined) {
}(window);

Can someone tell what the difference between these two approaches is?

I know.. what I meant is where this approach is used. Now I know that the !function approach is used to save one byte. — Albert Bakker, May 02 '13 at 14:20

score 1 · Answer 1 · answered May 02 '13 at 14:02

1

Using the ! operator before the function causes it to be treated as an expression, so we can call it:

!function() {}()

answered May 02 '13 at 14:02

Suresh Atta

Thank you. In the answer in above mentioned question I see that it is used to save some space.. :) – Albert Bakker May 02 '13 at 14:22

1 Answers1