syntax - Location of parenthesis for auto-executing anonymous JavaScript functions? -

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I was recently comparing the version in my project and saw the difference in the expression of the function. Created and self executed. 

  (function () {// code here}) ();   
 But now it wraps automatically execute the function into brackets.  
  (function () {// code here} ());   
 The accepted answer to the comment by CMS is both:  (function () {}) ();  and  (function () {} ());  is valid. ??? ???  
 I was wondering what is the difference? Has the former taken a global, anonymous function except memory? Where should the bracket be located?   
 
 
 They are virtually identical.  
 First creates brackets near a function so that it is a valid expression and it is invited. The outcome of the expression is undefined.  
 Performs another function and automatically creates brackets around the invitation, it creates a valid expression, it also evaluates to undefined.  
 I do not think there is a "right" way of doing this, because the result of expression is the same.    & gt; () () () () () () () () () () Foo '} ()) "foo"

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