loadJS.js

/*! loadJS: load a JS file asynchronously. [c]2014 @scottjehl, Filament Group, Inc. (Based on http://goo.gl/REQGQ by Paul Irish). Licensed MIT */
(function( w ){
	var loadJS = function( src, cb, ordered ){
		"use strict";
		var tmp;
		var ref = w.document.getElementsByTagName( "script" )[ 0 ];
		var script = w.document.createElement( "script" );

		if (typeof(cb) === 'boolean') {
			tmp = ordered;
			ordered = cb;
			cb = tmp;
		}

		script.src = src;
		script.async = !ordered;
		ref.parentNode.insertBefore( script, ref );

		if (cb && typeof(cb) === "function") {
			script.onload = cb;
		}
		return script;
	};
	// commonjs
	if( typeof module !== "undefined" ){
		module.exports = loadJS;
	}
	else {
		w.loadJS = loadJS;
	}
}( typeof global !== "undefined" ? global : this ));