What is the difference between these two Module pattern forms in Javascript?

Question

I've noticed that in different code samples on the web that there are two different closure forms -- but I haven't been able to find anything that identifies the difference (if any) between the two.

var module = (function() { ... })()

and

var module = (function() { ... }())

They both seem functionally equivalent in the sample below, but I seem to recall that at one time, the distinction was important (code worked with one form but not the other).

var sdk =(function(){
var privacy='illusion';
return (
    { 
        getPrivacy: function(){return privacy;}
    });
})()

console.log(sdk.getPrivacy());

seems to be identical to that the code fragment where the next-to-last line is replaced with }())

The same also seems to be true if I pass in a Module object to associate the public properties/methods to:

var sdk =(function($){
  var privacy='illusion';
  $.getPrivacy = function() { return privacy;}
  return($);
})(sdk=sdk||{})

console.log(sdk.getPrivacy());

or its counterpart form ending in }(sdk=sdk||{}))

You can use cleaner version of IIFE: `var module = function() { ... }()`. You don't need extra braces in this case. — dfsq, May 20 '15 at 05:58
See also http://stackoverflow.com/questions/15023560/what-is-the-difference-between-two-declarations-of-module-in-javascript — Bergi, May 20 '15 at 06:10
Thanks for pointing me to the previous questions :) I was struggling for the right search terms. — Allen Ellison, May 20 '15 at 06:17

What is the difference between these two Module pattern forms in Javascript?

0 Answers0