micmath

function main() {
    var count = 0;
}

console.log(count); // undefined

micmath

MyApp = 42;

(function() {
    if (typeof MyApp === 'undefined') {
        var MyApp = { oops: true };
    }
    
    console.log(MyApp);
}());

micmath

Traffic analysis of your site shows that most visitors
require module A (big, almost never changes) and only
a few visitors require module B (small, changes often).

Keep those modules at separate URLs and everyone will
only download module A rarely. On subsequent pages/visits
that data will come straight from user-agent's cache.

Combine them into a single URL and everyone will have
to download modules A+B every single time module B

micmath

/*
 * File:        jquery.dataTables.js
 * Version:     1.9.0.dev
 * Description: Paginate, search and sort HTML tables
 * Author:      Allan Jardine (www.sprymedia.co.uk)
 * Created:     28/3/2008
 * Language:    Javascript
 * License:     GPL v2 or BSD 3 point style
 * Project:     Mtaala
 * Contact:     [email protected]

micmath

/**
 * Classic Atari PONG!
 * @author Rob Taylor <[email protected]>
 * @date 15/11/2011
 */
define([
    'jquery-1'
], function ($) {

    var Pong = function () {

micmath

function findMyOwnTag(mySrc) {
  var scripts = document.getElementsByTagName('script');
  for (var i = scripts.length-1; i >= 0; i--) {
    if (scripts[i].src && scripts[i].src.indexOf(mySrc) > -1) {
      return scripts[i]
    }
  }
}

myScriptNode = findMyOwnTag('bloader.js');

micmath

<script>
bloader = {
    baseUrl: '/path/to/my/js',
    pluginPath: 'for/some/reason/plugins/r/here',
    paths: {
        curl: 'curl/src/curl',
        cssx: 'cssx/src/cssx',
        my: '../../my-lib/'
    },
    apiName: 'someOtherName'

micmath

http://mojo.codehaus.org/js-import-plugin/

modules.json

{
    "jquery": {
        "src": "file://Users/michael/scripts/vendor/jquery/1.7.0/jquery.js"
    },
    "underscore": {

"src": "file://Users/michael/scripts/vendor/underscore/1.2.1/underscore.js",

micmath

// Be explicit - provide names for everything.
(function(window) {
    /**
    * The ToolBox
    *
    * @class ToolBox
    */
    var ToolBox = {};

    /**

micmath

    /**
     * Attaches the script represented by the URL to the current
     * environment. Right now only supports browser loading,
     * but can be redefined in other environments to do the right thing.
     * @param {String} url the url of the script to attach.
     * @param {String} contextName the name of the context that wants the script.
     * @param {moduleName} the name of the module that is associated with the script.
     * @param {Function} [callback] optional callback, defaults to require.onScriptLoad
     * @param {String} [type] optional type, defaults to text/javascript
     */