First of all I’ll give a short introduction into the way Node.js handles modules. For security reasons alternative paths have to be defined before the require script has been loaded. Check out my post “JS require() for browsers – better, faster, stronger” for an improved version, which is CommonJS compliant, more secure, handles relative paths correctly and supports module bundles. CommonJS is a volunteer working group that designs and implements JavaScript APIs for declaring modules. The code in greeting.js could look like this: Again no surprises here – everything works like in Node.js. This web browser does not support JavaScript or JavaScript in this web browser is not enabled. You can even use relative path as you can see in the example code. So when the URL of the page is http://www.example.com/my/page/index.html the module root path will be /my/page/ and require('myModule') will try to load /my/page/module.js while require('aDirectory/aModule') will try to load /my/page/aDirectory/aModule.js. Sign in 2-bowser.html. Module identifiers not starting with a dot will be interpreted as absolute paths starting from the module root path, but relative paths are also possible. You can create an external JavaScript file, attach it to a web page, and then check the JavaScript in a web browser simply by opening the web page off your hard drive. ab12@st-andrews.ac.uk This is a University of St Andrews secure login page for Microsoft Office 365. Scroll to the JavaScript section and click Allow all sites to run JavaScript (recommended). That is the only thing in the spec you are missing. JavaScript statements often start with a keyword to identify the JavaScript action to be performed. No settings required: just send it out in any format. I’m still missing a way to bundle modules which don’t share a parent directory and a little tool to generate bundles automatically, but I guess this ain’t too complicated. The import directive loads the module by path ./sayHi.js relative to the current file, and assigns exported function sayHi to the corresponding variable.. Let’s run the example in-browser. Building apps that run in the browser is a completely different thing than building a Node.js application. Therefore require('../yourModule') and require('../../yourModule') both try to load /my/page/yourModule.js. This is where bundles drop in. In fact, Javascript is just the language used by many environments (the browser, or NodeJS, are examples of environments) that offer more objects and functions to work with. – HowToCreateApps That’s it. According to CommonJS module contains some extra information about the loading module, but it’s no problem for a bundle to discard this information, since it wouldn’t use them anyway. IE and WebKit will execute scripts added via appendChild out of DOM order, they execute them in network receive order. To find out if your web browser supports JavaScript or to enable JavaScript, see web browser help. Despite the fact that it's always JavaScript, there are some key differences that make the experience radically different. All you need to add to your code is one more require() call, so it’s easy to implement bundles just right before your site is ready to ship and you know exactly which modules are usually loaded together. The property name is the module identifier. To find out if your web browser supports JavaScript or to enable JavaScript, see web browser help. 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