IIFE

function.js

function awesome(param) {
  // do something with the param
}

awesome();

globals.js

(function (window, document) {
  // now we have window and document, but on a more local scope
})(window, document);

iife.js

(function (window, document, undefined) {
  // your code
})(window, document);

iife2.js

(function () {
  // do something
})();

iife3.js

(function (param) {
  // do something with the param
})(param)

jquery.js

(function ($, window, document, undefined) {
  // now we have $, window, document, and undefined
})(jQuery, window, document);

scope.js

(function () {
  var name = 'cade';
})();
console.log(name); // undefined

umd.js

(function (root, factory) {
  if (typeof define === 'function' && define.amd) {
    define(factory);
  } else if (typeof exports === 'object') {
    module.exports = factory;
  } else {
    root.MYMODULE = factory(root);
  }
})(this, function (root) {
  // code here
});