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Convert HTML to Markdown
21.6.2018
One of my biggest mistakes with this blog was not finding a WordPress plugin that would allow me to write my posts with markdown; to this day I still need to write posts in “Visual” mode and then manually convert the post to HTML for “Text” mode. One of these days I want...
Understanding the Almighty Reducer
13.6.2018
I was reently mentoring someone who had trouble with the .reduce() method in JavaScript. Namely, how you get from this:
const nums = [1, 2, 3]
let value = 0
for (let i = 0; i < nums.length; i++) {
value += nums[i]
}
...to this:
const nums = [1, 2, 3]
const value = nums.reduce((ac, next)...
console.logTime
7.6.2018
I work on a really complex debugger at Mozilla but, and don’t tell my colleagues, I sometimes enjoy simply using console.log and other console commands to get some simple output. I know, I know, but hey — whatever gets the job done. A few years ago I detailed console.time...
console.timeLog
7.6.2018
I work on a really complex debugger at Mozilla but, and don’t tell my colleagues, I sometimes enjoy simply using console.log and other console commands to get some simple output. I know, I know, but hey — whatever gets the job done. A few years ago I detailed console.time...
Angular pro začátečníky na jsDevMeetup
4.6.2018
V úterý 5.6. proběhne poslední přednáška před prázdninami na Fakultě informačních technologií ČVUT v Praze. Od 18:30 se v místnosti T9:107 podíváme na nový Angular a tvorbu webových aplikací. Více informací a registrace…
The Simplest Way to Add Google Maps to Your Site
31.5.2018
In this quick tutorial we show you how to configure Google Maps with the help of the gMaps library
The Easiest Way To Add Input Masks To Your Forms
28.5.2018
We take a look at a useful JavaScript library that allows us to create input masks for our text fields
Přechod na Gulp 4
28.5.2018
Gulp je populární nástroj pro automatizování vývoje. Typicky se používá např. k buildu CSS souborů za použití preprocesorů ze zdrojových SASS/LESS souborů, automatickému prefixování, spojování souborů, minifikování, správě ikon nebo sestavování JavaScriptů
Detect WebVR Support with JavaScript
16.5.2018
It’s been two years since I was heavily involved with WebVR at Mozilla but, despite not contributing every day, I can see VR making leaps and bounds, from Firefox making an increased effort to Chrome pushing VR and Oculus and HTC (Vive) improving their offerings. Native games are getting...
Get a React Component by DOM Node
15.5.2018
Retrieving a React component’s DOM node is fairly simple from within the component itself, but what if you want to work backward: retrieve a component’s instance by DOM node? This is a task that the old Dojo Toolkit’s Dijit framework allowed with the dojo.byId method, so it made...
How to Get a React Component’s Element
14.5.2018
JSX is an amazing pseudo-language for React, and if I’m honest, it’s what brought me to love React so much. Using React without JSX is cumbersome and frustrating, while using JSX is such an easier way to express your code. One drawback of JSX, however, is that it makes accessing...
Turn Sublime Text 3 into a JavaScript IDE
11.5.2018
Sublime Text is one of the most popular editors for web development and software development in general. It’s very smooth and fast compared to other editors (being written in C++ helps that speed). Sublime also has tons of plugins you can find through Package Control.
But it’s only a text editor...
Navštivte jsDevMeetup na téma ClojureScript
9.5.2018
22. května se bude na Fakultě informačních technologií na ČVUT v Praze konat další přednáška z cyklu jsDevMeetupů. Tentokrát bude přednášet Aleš Roubíček o vývoji v ClojureScriptu. Přednáška začíná v 18:30 v místnosti…
React and autofocus
7.5.2018
While I love ReactJS, I can say that I sometimes find interactions that were easy during the pre-ReactJS are annoyingly difficult or at least “indirect”. One example is properly ensuring that a given <input> element gets focused when a button in a different component...
IT akademie Brno – React v praxi
1.5.2018
Na workshopu si vyzkoušíte pokročilou tvorbu aplikací v Reactu a běžně využívaných knihovnách užívaných s Reactem. Podíváme se do světa Reactu a na jeho ekosystém, zaměříme se na prozkoumání nejvíce používaných knihoven s Reactem.…
SOLID – (S)ingle Responsibility Principle
23.4.2018
V tomto článku představím Single Responsibility Princip ze SOLIDu. Ukážeme si, jak tento princip dodržovat na konkrétním příkladu, namalujeme si nějaké UML diagramy, a nakonec přiložím celý příklad k dispozici v Typescriptu
The Dark Side of Promises
9.4.2018
Since the release of es6 many new features have found their way into NodeJS, but non had quite the same impact as promises. Promises have been developed for the browser before es6 was even a thing. There were several implementations that have been used like jQuery’s deferred object before...
Ladislav Prskavec – Moderdní webová architektura založená na klientském Javascriptu a API – jsDevMeetup
4.4.2018
GDG Prague pro Vás chystá 10. dubna přednášku Ladislava Prskavce o JAMStacku. Přednáška se koná od 18:30 na FIT ČVUT v Praze v posluchárně T9:111. Jistě znáte LAMP stack. Víte, že současnou stoupající hvězdou…
Destructuring and Function Arguments
3.4.2018
The JavaScript language has benefitted from some really awesome new features over the past few years, including arrow functions, the spread operator, and default function argument values. Even if your browser doesn’t yet support proposed JavaScript API syntax additions, you can use a tool...
5 Crucial Concepts for Learning d3.js and How to Understand Them
23.3.2018
You may have already heard about d3.js, the dazzling JavaScript library that lets you create beautiful charts and graphics with just a few lines of code. You might have seen some of the fantastic examples of D3 in action, or you may have heard that the New York Times uses it to create...