modulePattern.1.js

(function(module, undefined) {
    // Anything declared at this level is only accessible within this
    // function. Efectively, they will be the module's private variables.

    var _answer = 42;

    // The module's public interface is then defined by declaring variables on
    // the module variable that was passed in.

    module.getAnswer = function(question) {
        return _answer;
    };
})(window.module = window.module || {});

module.getAnswer('Huh?');