DEV Community

JavaScript

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!

Posts

👋 Sign in for the ability to sort posts by relevant, latest, or top.
My Harness Reported 0 Findings on 100 Files. All 100 Were Ignored.

My Harness Reported 0 Findings on 100 Files. All 100 Were Ignored.

3
Comments 1
4 min read
Web Locks and draft recovery: which browser edge cases am I missing?

Web Locks and draft recovery: which browser edge cases am I missing?

1
Comments 8
2 min read
A remote MCP server in ~100 lines, no SDK (on Cloudflare Pages)

A remote MCP server in ~100 lines, no SDK (on Cloudflare Pages)

Comments
5 min read
Streaming Markdown in Vue: Rendering LLM Tokens Without Flicker

Streaming Markdown in Vue: Rendering LLM Tokens Without Flicker

2
Comments
5 min read
My JWT signing was broken in production and my uptime check said 200 OK

My JWT signing was broken in production and my uptime check said 200 OK

Comments
7 min read
Finding where people quit a multi-step form, without cookies or recording what they typed

Finding where people quit a multi-step form, without cookies or recording what they typed

Comments
6 min read
Your node_modules Is an Attack Surface: A Practical npm Security Checklist for 2026

Your node_modules Is an Attack Surface: A Practical npm Security Checklist for 2026

Comments
6 min read
How I Built an Interactive Water Hardness & Appliance Calibration Tool with Next.js

How I Built an Interactive Water Hardness & Appliance Calibration Tool with Next.js

1
Comments
3 min read
Image sequence scroll animation lagging on mobile? 9 fixes

Image sequence scroll animation lagging on mobile? 9 fixes

Comments
9 min read
Is that Black Friday deal real? Check Coles, Woolworths, Tesco and Sainsbury's specials in 20 lines of JavaScript

Is that Black Friday deal real? Check Coles, Woolworths, Tesco and Sainsbury's specials in 20 lines of JavaScript

Comments
4 min read
I Built Formqivo — A Simple Way to Send HTML Form Submissions to Email

I Built Formqivo — A Simple Way to Send HTML Form Submissions to Email

Comments
2 min read
Instant Data Scraper Chrome Extension: A Practical Guide to What It Can—and Can’t—Do

Instant Data Scraper Chrome Extension: A Practical Guide to What It Can—and Can’t—Do

Comments
5 min read
That black box in your PDF is probably not a redaction: how to check in one command

That black box in your PDF is probably not a redaction: how to check in one command

Comments
3 min read
Create a ZIP in the Browser: The Deflate Ratios and CRC-32 Checksums You Can Check

Create a ZIP in the Browser: The Deflate Ratios and CRC-32 Checksums You Can Check

Comments
4 min read
How to Build a Personality Test in JavaScript: Scoring, Neutral Answers and Unit Tests

How to Build a Personality Test in JavaScript: Scoring, Neutral Answers and Unit Tests

Comments
6 min read
👋 Sign in for the ability to sort posts by relevant, latest, or top.