My starting point for a standard JS file. Module pattern + jQuery.

module_pattern_boilerplate.js

var interaction = (function($, window, undefined) {
	// These are some global variables.
	var example_a = '';
	// This is a standard document ready from jQuery. It allows the script to self-start.
	$(document).ready(function(){
		interaction.init();
	});
	return {
		init: function(){
			// These things happen when the page is loaded
			interaction.clicks();
		},
		clicks: function(){
      // Watch some clicks here
		}
	};
})(jQuery, this);