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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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Yes, {} + [] = 0. No, JavaScript Isn’t Broken

Born from airport boredom and spec quirks
sylwia-lask profile

Yes, {} + [] = 0. No, JavaScript Isn’t Broken

#javascript #webdev #node #programming
139
Picked as gem Comments 110
5 min read
Are You a Web Developer or a Browser Expert? 7 Tests I Failed Building a Photo Editor That Never Uploads Your Photos
akhourianmolkumar profile

Are You a Web Developer or a Browser Expert? 7 Tests I Failed Building a Photo Editor That Never Uploads Your Photos

#webdev #javascript #ai #tutorial
34
Comments 87
7 min read
Claude Code Custom System Prompts in 2026: Overriding Defaults, Appending Instructions, and What You Cannot Change
jsmanifest profile

Claude Code Custom System Prompts in 2026: Overriding Defaults, Appending Instructions, and What You Cannot Change

#typescript #ai #javascript #webdev
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13 min read
Scoring a "You Won!" Message: The Pattern Checks Behind Our Scam Checkers
reallyoffers profile

Scoring a "You Won!" Message: The Pattern Checks Behind Our Scam Checkers

#javascript #webdev #security
Comments
5 min read
Why I Built a 100% In-Browser Privacy Toolkit (And How to Manipulate PDFs in Memory Without a Backend)
toolnexus profile

Why I Built a 100% In-Browser Privacy Toolkit (And How to Manipulate PDFs in Memory Without a Backend)

#webdev #javascript #opensource #programming
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5 min read
Running ffmpeg, Whisper and background removal in the browser: lessons learned
dennykot profile

Running ffmpeg, Whisper and background removal in the browser: lessons learned

#webassembly #javascript #machinelearning #performance
Comments
3 min read
Counting LZW codes to see why dithered GIFs come out bigger
iterandum profile

Counting LZW codes to see why dithered GIFs come out bigger

#webdev #javascript
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4 min read
Extracting text from a PDF without a PDF library: the T* trap
ii-x-ai profile
ii-x

Extracting text from a PDF without a PDF library: the T* trap

#showdev #pdf #javascript #programming
Comments
3 min read
Send WhatsApp Order Updates From Google Sheets With 80 Lines of Apps Script
wapgrowai profile

Send WhatsApp Order Updates From Google Sheets With 80 Lines of Apps Script

#whatsapp #javascript #googlesheets #tutorial
1
Comments
6 min read
Find your Brevo list ID and add contacts to it with plain Node.js fetch
omnigenz profile

Find your Brevo list ID and add contacts to it with plain Node.js fetch

#node #javascript #api #email
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4 min read
Your bank's CSV export is the messiest API you will ever consume
fuxiaohua profile

Your bank's CSV export is the messiest API you will ever consume

#csv #webdev #javascript #node
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6 min read
Stop Writing while (true) reader.read() Loops. Streams Are Iterable Now
iamprincejkc profile
JKC

Stop Writing while (true) reader.read() Loops. Streams Are Iterable Now

#code #javascript #tutorial #webdev
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4 min read
I Deleted My Scroll-Lock Library's Ugly Hack. `scrollbar-gutter` Replaces It.
parsajiravand profile

I Deleted My Scroll-Lock Library's Ugly Hack. `scrollbar-gutter` Replaces It.

#css #webdev #frontend #javascript
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6 min read
Mapping a picture onto a Minecraft skin in the browser: what worked and what didn't
zhifen_zhu_3df68293e0ddb6 profile

Mapping a picture onto a Minecraft skin in the browser: what worked and what didn't

#webdev #javascript #gamedev #canvas
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3 min read
Checking the numbers in a calculator FAQ against the code behind it
_d56ee71434515ebe5ebd7f profile
Alan

Checking the numbers in a calculator FAQ against the code behind it

#webdev #javascript #testing #nextjs
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6 min read
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