7 architectural attributes of a reliable React component

Dmitri Pavlutin on javascript, react, component, encapsulation, single responsibility principle, unit test, pure |

I like how React embraces component-based architecture. You can compose complex user interfaces from smaller pieces, take advantage of components reusability and abstracted DOM manipulations. Component-based development is productive: a complex system is built from specialized and easy to manage pieces. Yet only well designed components ensure composition and reusability benefits. Despite the application complexity, hurry to meet the deadlines and unexpectedly changing requirements, you… Continue reading

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7 tips to handle undefined in JavaScript

Dmitri Pavlutin on javascript, undefined |

When I started to learn JavaScript about eight years ago, a bizarre situation for me was the existence of both undefined and null that represent empty values. What is the clear difference between them? They both seem to define empty values, and moreover the comparison null == undefined evaluates to true. Most of the modern languages like Ruby, Python or Java have a single null value… Continue reading

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Announcing Voca: The ultimate JavaScript string library

Dmitri Pavlutin on javascript, string, open-source, utils |

Open source changed the software development. And it changes the developers. Many libraries, apps, servers, and much more are powered by open source software. Catch the open source wave I always wanted to create and maintain an open source project. It is a must experience for every software developer. This way I started to work on a JavaScript library called Voca. It's main scope is… Continue reading

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The path of software development craftsmanship

Dmitri Pavlutin on javascript, software development, craftsmanship |

The software development complexity is increasing day by day. Almost every year a new framework (like AngularJS, ReactJS) is released, new build tool (like Webpack, Rollup). Even new JavaScript versions (ECMAScript 2015, 2016 and soon 2017) are released every year! Generally the same situation exists in other fields of software development. For example mobile applications. 2 years ago Apple introduced a new programming language Swift.… Continue reading

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What every JavaScript developer should know about Unicode

Dmitri Pavlutin on javascript, unicode, ecmascript-2015, string |

This story starts with a confession: I was afraid of Unicode for a long time. When a programming task required Unicode knowledge, I was searching for a hackable solution for the problem, without detailed sense what I was doing. My avoiding continued until I faced a problem that required detailed Unicode knowledge. There was no way to apply situational solutions. After applying some efforts, reading… Continue reading

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The art of writing small and plain functions

Dmitri Pavlutin on javascript, clean-code, small, plain, function |

The complexity of software applications is growing. The code quality is important in order to make the application stable and easily extensible. Unfortunately almost every developer, including myself, in his career faced with bad quality code. And it's a swamp. Such code has the following harmful characteristics: Functions are too long and do too many things Often functions have side effects that are difficult to… Continue reading

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How to iterate easily over object properties in JavaScript

Dmitri Pavlutin on javascript, es2017, ecmascript-2017, object, property |

I like my code to be elegant and efficient. The logic should be straightforward to make it hard for bugs to hide, the dependencies minimal to ease maintenance [...]. Clean code does one thing well. Bjarne Stroustrup, inventor of C++ In the same period of ECMAScript 2016 release in June 2016, JavaScript developers are happy to know that another bunch of awesome proposals reached the stage… Continue reading

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Make your JavaScript code shine: knockout old ES5 hacks (Part 2)

Dmitri Pavlutin on javascript, es2015, ecmascript-2015, class-inheritance, string |

Many developers were frustrated about JavaScript, especially before ECMAScript 2015 standard. And they had the right too: the language is known for its weakness and initial design drawbacks. How did it happen? At the beginning of the web era, no one did know how exactly the web will look in 10 - 15 years. And especially that a small Java's brother JavaScript will become the… Continue reading

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Make your JavaScript code shine: knockout old ES5 hacks

Dmitri Pavlutin on javascript, es2015, es2016, ecmascript-2015, ecmascript-2016, hacks-dont-pass |

It's known that before ECMAScript 2015 JavaScript language was tricky. For simple scripts ES5 code works fine. But as soon as the application complexity grows, you start to feel that the lack of language constructs is making your code unpleasant. Because you have to implement the application requirements, you can't jump over the parts of code that are troublesome to implement in ES5 style. The… Continue reading

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Detailed overview of well-known symbols

Dmitri Pavlutin on javascript, symbol, iterator, well known symbols, ecmascript-2015, es2015 |

Symbol is a new primitive type available from ECMAScript 2015, which allow to create unique identifiers let uniqueKey = Symbol('SymbolName'). You may use symbols as keys of properties in objects. A list of symbols that JavaScript treats specially is published as well-known symbols. Well-known symbols are used by built-in JavaScript algorithms. For example Symbol.iterator is utilized to iterate over items in arrays, strings, or… Continue reading

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