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53 items on 23 Oct 2026
JavaScript

Why your date shows up a day early: a one-minute check

A date that shows up as the day before is one of the most common small bugs in front-end code. Here is a one-minute check you can run in any console. The check const a = new Date("2026-10-25"); // date-only string const…

Source: DEV JavaScript feed Kai Mercer
JavaScript

Syntax Comparison of ES5 vs ES6

Basically, I was revising JavaScript fundamentals. While doing that, I had a curious thought that led me to write content on it. And this is a common topic roaming all over the internet. ## Demo Data const users = [ {…

Source: DEV JavaScript feed Abdullah Al Nafiu
JavaScript

Your Next Coding Interview Might Start With Code You Didn’t Write

A practical debugging rehearsal: trace one request, isolate the mistake, and prove the repair without rewriting everything. You prepare to build a solution from an empty editor. Then you open the interview project and…

Source: DEV JavaScript feed Emily Woods
JavaScript

My test harness said the game worked. The browser disagreed twice.

I spent a day shipping a small rhythm game: fireflies fall down four lanes, you tap them on the beat, combo builds, a fox head peeks up from the bottom of the screen and perks its ears when you land a catch. The version…

Source: DEV JavaScript feed Felix
JavaScript

Matita 0.4.0: 60 new icons, and one number from sketchy to exact

Matita is a set of pencil-style icons for the web, drawn by code. Lines run a little past their ends, box corners cross, circles overlap where the pen closes. 0.4.0 is out today: 60 new icons (200 to 260) and a new…

Source: DEV JavaScript feed Matita
JavaScript

How does a string have methods if it's not an object?

This is the fifth post in a series I'm writing as I learn JavaScript. By now this series has a running theme: I learn a rule, then I find something that seems to break it, and chasing down why teaches me more than the…

Source: DEV JavaScript feed Parth
JavaScript AI

Create an AI Podcast Generator with ElevenLabs

Why an AI‑Powered Podcast? Podcasts have exploded in popularity, but producing them is still a manual, time‑consuming process. You have to write a script, record the audio, edit out mistakes, and finally publish the…

Source: DEV JavaScript feed VoiceDeveloper
JavaScript AI

Empty AI observability panels: a product teardown of SigNoz

I’ve been building ReplayLens, a project around AI agent quality and regression reporting. That got me interested in an engineering question: how do we make complex technical systems easier to understand when something…

Source: DEV JavaScript feed Kavya
JavaScript

New challenge: Build a gamer sign-up form

We've launched a new free challenge: a gamer sign-up form. You'll build the sign-up screen for NEONCORE, a competitive-gaming network where players register as "operators" with a callsign. It's a junior-level project…

Source: DEV JavaScript feed Matt Studdert

53 items available