@RunJS_app

JavaScript news and development updates from RunJS, the JavaScript playground for your desktop.

runjs.app
Joined March 2019
  • Tweets2.1K
  • Following796
  • Followers4.1K
73Media
Include

Only show posts containing:

Exclude

Hide posts containing:

Time range
-
Minimum likes
RunJS ❤️ JavaScript retweeted
Dong Nguyen@ndaidongAug 26
Stumbled on this gem: Music Theory for Programmers. As a coder who plays piano, seeing scales & chords built from pure math + JS arrays? Absolute mind-blow 🎹#MusicTheory #Programming #Piano #Coding @RunJS_app runjs.app/blog/music-theory-…

Music theory for programmers

I can't play an instrument, so I worked out music theory in JavaScript instead. Twelve notes, scales and chords, derived from scratch with code you can hear.

runjs.app
1
2
84
RunJS ❤️ JavaScript retweeted
Luke Haas
@lukehaasAug 19
I can't play an instrument, so I figured out music theory in JavaScript instead. I now understand why there are 12 notes and why notes in the same key sound good 🎶 I've written up my findings with code examples you can run and hear.
3
9
2
68
22,094
RunJS version 4 is out. Lots of new features and improvements. runjs.app/blog/whats-new-in-…

RunJS v4: Runtime Environments, Logpoints & Web View

RunJS v4 introduces dedicated runtime environments, a web view, logpoints, a new status bar, and a rebuilt output panel - along with upgraded Node.js, Chromium, and V8.

runjs.app
1
1
6
246
Replying to @zaherg
Yes, renewal is included 👍
1
35
The RunJS Black Friday sale is now on 🎁 - 30% OFF! runjs.app/buy

Buy License - RunJS

Buy a RunJS license and get unlimited access to all features, including NPM integration, multiple tabs, snippets, extra themes and more.

runjs.app
1
1
520
RunJS ❤️ JavaScript retweeted
eden lane
@lane_en21 Nov 2025
When I need to test some npm library or code snippet - I use @RunJS_app - it's so damn convenient! Looks like they have a black friday discount with a code: BLACKFRIDAY2025. Don't miss your chance!
1
1
305
Replying to @daytonlowell
Thanks, I’m looking into it 👍
16
The latest version of RunJS is here, featuring expanded AI integration with new providers like Gemini, Ollama, Mistral, and Anthropic. Download it at runjs.app
316
Replying to @zaherg
Thanks for testing that. I’ll get the .env file issue sorted in the next release 👍
1
24
Replying to @zaherg @ardadev
Did you try setting the working directory via the action menu?
1
39
Replying to @PaulHenri_L
Try RunJS
1
1
78
RunJS ❤️ JavaScript retweeted
Pier Gorelli@PGorelli9142425 Jul 2025
Replying to @RunJS_app
@RunJS_app is the perfect study buddy — a fast, simple tool to experiment with JavaScript. No setup, instant results, just pure coding fun. #JavaScript #Coding
1
1
322
What's Coming to JavaScript — The latest updates from the TC39 meeting reveal exciting proposals shaping the future of JavaScript. deno.com/blog/updates-from-t…

What's coming to JavaScript | Deno

Here are proposals that were advanced at the last TC39 meeting and what that means for the future of JavaScript.

deno.com
1
336
JavaScript, When is this? — Mat Marquis explores the intricate nature of the "this" keyword, shedding light on its context-dependent behaviour in functions. piccalil.li/blog/javascript-…

JavaScript, when is this?

JavaScript’s “this” keyword trips up all developers — junior and senior. In the first of two parts, Mat Marquis goes deep on the groundwork you need to better understand “this” and how it works.

piccalil.li
1
276
Replying to @mbetancurb
Happy to consider it if people want it 👍
19
RunJS 3.1.0 is here. Including exciting new features and improvements, such as Magic Comments - a new way to instantly see the value of any expression anywhere in your code. runjs.app/ #JavaScript
2
1
308
A Flowing WebGL Gradient, Deconstructed — This article offers a thorough introduction to writing WebGL shaders with gradient noise, breaking down the math and techniques involved in creating captivating visual effects. alexharri.com/blog/webgl-gra…

A flowing WebGL gradient, deconstructed

An introduction to writing WebGL shaders using gradient noise and cool math.

alexharri.com
1
217
Fastify + React shows impressive speed, being 7x faster than Next.js. With a mature Vite integration plugin, @fastify/react has reached version 1.0, simplifying the development of swift React applications on Fastify. hire.jonasgalvez.com.br/2025…

Fastify + React is 7x Faster than Next.js

hire.jonasgalvez.com.br
2
262
Deploying a Next.js App to Production in Any Server — This article provides updated guidance on building a Docker image for a Next.js application that allows for deployment without reliance on proprietary cloud services. saybackend.com/blog/04-deplo…

Deploy Next.js Without Vercel: Self-Hosting Production Guide

Deploy a Next.js app without Vercel using standalone output, Docker, and a production-ready Node server that can run on any VM, container host, or cloud.

saybackend.com
1
194
SSR Deep Dive for React Developers — This article provides a detailed exploration of Server-Side Rendering (SSR), pre-rendering, hydration, and Static Site Generation (SSG) in React, examining their costs, performance implications, benefits, and trade-offs developerway.com/posts/ssr-d…

SSR Deep Dive for React Developers

Explore step-by-step how Server-Side Rendering (SSR), pre-rendering, hydration, and Static Site Generation (SSG) work in React, their costs, performance impact, benefits, and trade-offs.

developerway.com
236
Load more