JavaScript global variables & self-invoking anonymous functions

Question

So I\'ve been reading through Javascript - The Good Parts and one thing that Crockford points out is the use weakness of global variables in Javascript, in such a way that if yo

Answer 1

Making it a global function is not the answer. Why wouldn't you do this? This keeps x out of the global namespace.

(function () {
    var x = 'meh';
    alert(typeof x);  //string
})();