From https://en.wikipedia.org/wiki/Immediately-invoked_function_expression

MultipleWayOfIIFE.js

// There are other ways to enforce a function expression:  
!function () { /* ... */ }(); 
~function () { /* ... */ }();
-function () { /* ... */ }(); 
+function () { /* ... */ }(); 
void function () { /* ... */ }(); 
//In contexts where an expression is expected, wrapping in parentheses is not necessary:  
var f = function () { /* ... */ }(); 
true && function () { /* ... */ }();
0, function () { /* ... */ }();