There's a section in Ben Alman's blog about Immediate Invoked Function
Expressions that shows the various ways you can make a function
expression:
http://benalman.com/news/2010/11/immediately-invoked-function-expression/
// Either of the following two patterns can be used to immediately invoke
// a function expression, utilizing the function's execution context to
// create "privacy."
(function(){ /* code */ }()); // Crockford recommends this one
(function(){ /* code */ })(); // But this one works just as well
// Because the point of the parens or coercing operators is to disambiguate
// between function expressions and function declarations, they can be
// omitted when the parser already expects an expression (but please see the
// "important note" below).
var i = function(){ return 10; }();
true && function(){ /* code */ }();
0, function(){ /* code */ }();
// If you don't care about the return value, or the possibility of making
// your code slightly harder to read, you can save a byte by just prefixing
// the function with a unary operator.
!function(){ /* code */ }();
~function(){ /* code */ }();
-function(){ /* code */ }();
+function(){ /* code */ }();
On 11 May 2011 23:00, tibolan <[email protected]> wrote:
> Hi,
>
> I was just reading the source code of a script, and i found a strange
> implementation:
>
> !function (){
> //
> }()
>
> After some test, it seems to do the same thing than:
>
> (function (){
> //
> })();
>
> is there another difference between this two way of doing the same
> thing, if we set aside the saving of 1 char :D ?
>
>
> --
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--
Nick Morgan
http://skilldrick.co.uk
@skilldrick
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