Are “(function ( ) { } ) ( )” and “(function ( ) { } ( ) )” functionally equal in JavaScript? [duplicate]

Answer 1

There's no difference. Both are function expressions.

There is be a third way, too:

+function() {
    bar = 'bar';
    alert('foo');
}();

(instead of the + another operator would work, too)

The most common way is

(function() {
    // ...
})();

though.