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

đź‘‹ Sign in for the ability to sort posts by relevant, latest, or top.
Your 150-line AI agent works in the demo. Here's what breaks in production.

Your 150-line AI agent works in the demo. Here's what breaks in production.

Comments
2 min read
My web app fired two POST requests per submit. The fix taught me what React StrictMode is actually for.

My web app fired two POST requests per submit. The fix taught me what React StrictMode is actually for.

Comments
3 min read
Building a Chrome Extension with Manifest V3, React, and a Shadow DOM Panel injected on Amazon published: true

Building a Chrome Extension with Manifest V3, React, and a Shadow DOM Panel injected on Amazon published: true

Comments
2 min read
How we built a Reddit comment-tree scraper that returns upvote scores — through a residential proxy

How we built a Reddit comment-tree scraper that returns upvote scores — through a residential proxy

Comments
6 min read
Introducing VidCompress: in-browser video compression for developers who hate uploading files

Introducing VidCompress: in-browser video compression for developers who hate uploading files

Comments
4 min read
List comprehensions, generators, and the walrus: what most Python devs overlook

List comprehensions, generators, and the walrus: what most Python devs overlook

Comments
4 min read
I built a date calculator site with Next.js 14. Here's what I learned, hitting PageSpeed 98/100

I built a date calculator site with Next.js 14. Here's what I learned, hitting PageSpeed 98/100

Comments
2 min read
Browser Router in React

Browser Router in React

2
Comments
2 min read
_action: Declarative Event Handlers in an Attribute

_action: Declarative Event Handlers in an Attribute

3
Comments 1
6 min read
I built 121+ free developer tools that run 100% in your browser

I built 121+ free developer tools that run 100% in your browser

Comments
1 min read
I Built a Modern AI Assistant Using HTML, CSS, and JavaScript

I Built a Modern AI Assistant Using HTML, CSS, and JavaScript

Comments
3 min read
Wraplet vs Web Components

Wraplet vs Web Components

Comments
12 min read
🛡️ How I Built a NSFWJS Alternative That's 2.5 Lighter (~1 MB Gzipped) and Runs in ~65 ms (WASM)

🛡️ How I Built a NSFWJS Alternative That's 2.5 Lighter (~1 MB Gzipped) and Runs in ~65 ms (WASM)

Comments
9 min read
Object Constructors in javascript

Object Constructors in javascript

1
Comments
4 min read
Why Your XML Sitemap Is Silently Killing Your SEO (And How to Fix It Free)

Why Your XML Sitemap Is Silently Killing Your SEO (And How to Fix It Free)

Comments
5 min read
đź‘‹ Sign in for the ability to sort posts by relevant, latest, or top.