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Once relegated to the browser as one of the 3 core technologies of the web, JavaScript can now be found almost anywhere you find code. JavaScript developers move fast and push software development forward; they can be as opinionated as the frameworks they use, so let's keep it clean here and make it a place to learn from each other!

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RollDate v1.1.0 is now available
rolldate profile
RollDate

RollDate v1.1.0 is now available

#webdev#javascript#opensource#web3
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1 min read
I built in-app Polymarket copy trading with MetaMask EIP-712 — no private keys, no redirects, one click
manpreet_brar_264e408885a profile
Manpreet Brar

I built in-app Polymarket copy trading with MetaMask EIP-712 — no private keys, no redirects, one click

#webdev#javascript#blockchain#buildinpublic
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1 min read
Building Lightweight Embeddable Calculators Without Dependencies
calculatorkaro_181b96c287 profile

Building Lightweight Embeddable Calculators Without Dependencies

#webdev#javascript#programming#seo
1
Comments
2 min read
Why your vi.mock in Vitest silently does nothing
msakai profile
MSakai

Why your vi.mock in Vitest silently does nothing

#vitest#testing#typescript#javascript
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1 min read
Testing Next.js 15 Apps — The Setup I Actually Use
anas_sheikh_2 profile
Anas Sheikh

Testing Next.js 15 Apps — The Setup I Actually Use

#nextjs#programming#javascript#testing
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5 min read
CORS Errors Explained: Every Fix, Every Framework (2026 Guide)
napster_rj profile
Rahul J

CORS Errors Explained: Every Fix, Every Framework (2026 Guide)

#cors#javascript#webdev#security
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10 min read
Why "business days between two dates" isn't a division problem (I only saw it clearly building a workday calculator)
joe8_lin_tw profile

Why "business days between two dates" isn't a division problem (I only saw it clearly building a workday calculator)

#javascript#webdev
2
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5 min read
Implementing UUID v7 with nothing but crypto.getRandomValues()
takahiro_hashito_a1f3f0dc profile

Implementing UUID v7 with nothing but crypto.getRandomValues()

#javascript#database#programming
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3 min read
Building ReproSpec: Portable Evidence Bundles and Offline Replay for Node.js
henryparker37 profile
Henry Parker

Building ReproSpec: Portable Evidence Bundles and Offline Replay for Node.js

#javascript#testing#docker#opensource
2
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4 min read
🚀 Day 12 of My Node.js Learning Journey: Mastering Streams & Backpressure 📂⚡
joshikrati03 profile
Krati Joshi

🚀 Day 12 of My Node.js Learning Journey: Mastering Streams & Backpressure 📂⚡

#webdev#programming#javascript#node
1
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3 min read
Cómo solucionar \"Text content does not match server-rendered HTML\" en Next.js App Router
erickeduardoramos03 profile

Cómo solucionar \"Text content does not match server-rendered HTML\" en Next.js App Router

#javascript#nextjs#react#webdev
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2 min read
Building Real-Time Messaging in a Next.js SaaS with Server-Sent Events
hey-virender profile

Building Real-Time Messaging in a Next.js SaaS with Server-Sent Events

#javascript#nextjs#webdev#mongodb
1
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2 min read
Node.js Runs TypeScript Now: Field Notes on Native Type Stripping
ahmed_mahmoud360 profile
Ahmed Mahmoud

Node.js Runs TypeScript Now: Field Notes on Native Type Stripping

#node#typescript#javascript#webdev
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5 min read
I built a real-time social network to challenge X/Twitter. Try to crash it.
codemaster_121482 profile
Seif Ahmed

I built a real-time social network to challenge X/Twitter. Try to crash it.

#backend#buildinpublic#javascript#webdev
7
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1 min read
The SSRF check that passed every test and still had a fail-open branch
takeaseatventure profile
takeaseat

The SSRF check that passed every test and still had a fail-open branch

#javascript#security#webdev#devops
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2 min read
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