To make a library ready for production, you need to write unit tests that cover all the core functionalities of the library. Then you will need to establish a means to automatically run those unit tests in different target environments. Only when a library passes all unit tests in all …

This is my 42nd post . If you’re as geek as I am, that’s good for you that you know what excites me. Otherwise typing 42 into Google may be a revelation that will put your mind into order. 8 months ago, I started this blog with a bold claim …

If you’ve skimmed through the source code of o2.js modules you’ll see “‘use strict’” declarations at their top. The ‘use strict’ pragma forces JavaScript engine to run in strict mode, for the browsers that support it. Strict mode, as its name implies, obliges a stricter usage of the language. And …

Functions are the building blocks of any JavaScript module. In this tutorial, we’ll have a glance on basic principles behind functional programming in JavaScript, along with some lesser known features of JavaScript functions. This is mainly a follow-up, and a more in-depth analysis, of a former JavaScript Function Kung-Fu post. …