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Nalezeno "JavaScript": 798

React Node Flow


Flow, the static type checker used in many React projects, feels like a gift and a curse at times; a gift in that it identifies weaknesses in your code, and a curse that sometimes you feel like you’re needlessly adjusting your code to satisfy Flow.  I’ve grown to appreciate Flow...

What the heck is "Script error?"


If you’ve done any work with the JavaScript onerror event before, you’ve probably come across the following: "Script error." “Script error” is what brows

Collective #426


Teleport * Vibora * Voronoi Airports WebGL * Soccerpattern * Using JavaScript modules on the web * Understanding Redux Collective #426 was written by Pedro Botelho and published on Codrops

Convert HTML to Markdown


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


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)...

A Quick Roundup of Recent React Chatter


Like many, many others, I'm in the pool of leveling up my JavaScript skills and learning how to put React to use. That's why Brad Frost resonated with me when he posted My Struggle to Learn React." As Brad does, he clearly outlines his struggles point-by-point: I have invested enough time...

Versioning Interview


Adam Roberts (who you might recognize from our interview with him), interviewed me for the Versioning newsletter. I'm publishing my answers here for y'alls perusal as well! Which dev/tech idea or trend excites you the most at the moment, and why? I love that new JavaScript has arrived. I don’t...

Manipulating Pixels Using Canvas


Modern browsers support playing video via the <video> element. Most browsers also have access to webcams via the MediaDevices.getUserMedia() API. But even with those two things combined, we can’t really access and manipulate those pixels directly. Fortunately, browsers have a Canvas...

console.logTime


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


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...

Debug JavaScript in Production with Source Maps


These days, the code you use to write your application isn’t usually the same code that’s deployed in production and interpreted by browsers. Perhaps you’re writing your source code in a language t

What’s Next for Hybrid App Developers? (Sponsored)


The story of hybrid application development is a never-ending one. Each framework has to continuously strive and innovate to remain relevant, and the discussion of which framework to use is a question often asked. Most hybrid applications are built using a combination of HTML, CSS, and JavaScript....

Angular pro začátečníky na jsDevMeetup


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…

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