• Oct 06 ByContract 0.0.5 released. ByContract is a small library that implements Design by Contract -like validation in JavaScript code, using JSDoc expression for contracts. From now it supports custom types (union/complex) declared in the fashion of @typedef JSDoc tag. Follow the link
  • Sep 14 The Flavor of TypeScript: a hands-on guide full of ready-to-use recipes and code examples Follow the link
  • Apr 13 "A few things you need to know about CSS" slides from an internal master-class Follow the link
Fancy Modal Windows without JavaScript

This article provides a walkthrough on how to create a modal window that opens in the center of the screen by pressing a link while everything that underlies the window becomes blurred without any JavaScript. It also has a fallback code for the browsers not supporting :target pseudo-selector.

JavaScript MV* Framework - Making the Right Choice

JavaScript frameworks have been proliferating recently with a frightening rate. Just take a look at TodoMVC that provides dozens of MV* framework-specific implementation for a single task. It gives a felling how must be confused a developer making a choice for a framework.

Some time ago I even ran into a manifesto ( against JavaScript frameworks. I do not completely agree with the author, yet he has a point – it’s too many of them, too many of meta-languages to study that you as a web-developer may not need at all. Most of the frameworks contain plenty of code (AngularJS - 22K LOC, Ember.js – 43K LOC) and if you hope to know what is really going on in your application you have to study every line of this code. Let’s assume 3-5 of the trending frameworks are thoroughly tested by the communities, but what about others? Are you ready to spare days and weeks digging in someone’s code looking for traps and leaks in there?

Modular JavaScript in the browser with CommonJS Compiler

JavaScript was designed as a script language that is easy to embed in a larger host system and meant to manipulate the objects of the host system. With the advance of HTML5 formerly mostly static web-pages are turning into sophisticated web-applications. Now we expect JavaScript code to be scalable and modular. But how when JavaScript has no built-in facilities to combine distinct scripts?

Responsive Web Design with HTML5

While the variety of computer monitor shapes and sizes steadily expands Responsive Web Design (RWD) is rather a matter of survival. It's hardly someone was thinking about RWD when the first specs on HTML and CSS where written. However now a lot of work done to provide a native way of achieving RWD, to bring fast and consistent solutions.

This article presents hands-on examples of generic RWD tasks implemented with such W3C modules as CSS Flexible Box, CSS Grid Layout, CSS Regions, CSS Multi-column Layout. It also demonstrates use of "position sticky", srcset attribute and fallbacks on webP.

Making Browser Refresh in Response to Our Sources Modification

We all are taught not to repeat ourselves while coding.. Nonetheless we keep repeating the same operation over and over – pressing F5/Ctrl-R for browser reload every time we have to examine the results of our last changes. After watching some of Paul Irish screencasts where he was showing the magic of live reload under Sublime Text 2 I wondered if I could employ something alike while keeping working with my beloved NetBeans IDE. However in my case it wouldn’t be enough just to reload the page when any of watched files change. I need to compile SASS sources, combine atomic JavaScript chunks into a single module and sometimes flush the application cache.

Eventually I found a tool meeting all requirements I have.

Importing External Files in JavaScript

As JavaScript application grows, navigation on the code becomes a hell. It comes on mind how useful would be to have ability including JavaScript files. For example, thanks to include/require statements we can build an expressive file structure in PHP. Let’s say following PSR-0 standard we have one class per file (or one prototype object per file in JavaScript) and class name (namespace) reflects the location of the file where it belongs. Well, on server side (e.g. with NodeJS) that is achievable with CommonJS. Of course you have to export every object of a single file as a module, which is often not a module in fact. As for the client side, modular JavaScript implies that all the dependent modules load asynchronously and separately. If every object makes a module to load that sounds nothing like a good idea.

Making use of HTML5 Forms

Since the very beginning of HTML there were no much of changes regarding forms until recently. Yet, there was an attempt to bring a new API with XForms, but it was never really supported by any of major browsers. Now we have a comprehensive consistent Form API which allows us to create full-fledged forms even with not help of JavaScript. Everything sounds so exciting until you try to use HTML 5 Forms on real projects.

Bringing Google Analytics Reports to Your Application

Reasonably statistic analyses belong to CMS ACP reports. So, CMS vendors tend to include some into their products. However, they often make statistical data collection and analysis a part of CMS. It usually gains some primitive reports and affects application performance. I believe any sound statistic analysis can be delivered only by a dedicated specialized application. Meantime CMS can be used to represent the reports prepared by that application. Have you ever fancied displaying Google Analytics Reports in your CMS?

JavaScript Asynchronous Dependency Loader

A substantial web application doesn’t need to wait until all the required JavaScript libraries loaded. Usually most of them can load asynchronously and start acting whenever they are ready. Most commonly used approach here would be AMD. That’s a sophisticated and time-proved solution. However to use it with libraries, you must have them converted to modules. I don’t appreciate the idea to interfere with 3-rd party library code. At the same time I still need non-blocking loading and dependency being resolved in my code. Thus, I worked out a very simple, but yet working solution.