How to declare global variables when using the strict mode pragma

Question

It\'s considered good practice to use a self-invoking function to wrap strict mode compliant code, often called the strict mode pragma:

(function(){
  \"use stri         


        

Answer 1

Method 1 would fail if it's pasted in another function.

Using method 3, it is easier to export your methods to another namespace. Simply replacing window with, say, frames[0] or document is enough to attach all methods to a custom namespace.

I recommend method 3, for the last reason.