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New articles about Front End development. JS, CSS, React, Vue, Angular and others! Russian tech blog: @five_a_m Admin: @jem_jem
Updated: 2026-08-15
Working with ::highlight() using progressive enhancement Using a baseline of elements, Sunkanmi Fafowora helps you to understand how the new highlight API works with some progressi…
React 19 Actions Explained: How the 4 APIs Fit Together Part 4 of React 19 Deep Dive: what Actions are, form action vs onSubmit, sync vs async Actions, and how useActionState, useO…
React Router v8 in Action: Lazy Loading and Nested Routes A practical guide to modern React routing with lazy pages, nested layouts, URL params, and navigation. https://reactdevelo…
How to build a real time voice AI agent in the browser Build a fully local voice AI agent using Transformers.js and WebGPU, no server round trips, no third-party APIs, and sub-seco…
Is npm finally safe? https://newsletter.humanwhocodes.com/posts/is-npm-finally-safe
Using and Styling the Dialog Element There's a lot of nuance to the element, a seemingly little piece of web architecture. I've got some notes from digging into it. https://css-tri…
How Baseline Can Help You Ship Less JavaScript The gap between “you need a library for this” and “the browser does this” keeps closing. A practical guide to auditing your dependenc…
How React’s Fiber Architecture Actually Works: Reconciliation, Lanes, and the Render Loop A precise walkthrough of what happens between calling setState and pixels changing on scre…
A head-to-head of how Backpack and Phantom advertise on Telegram — the Solana-rooted exchange-and-wallet versus the leading self-custody wallet, their creative and targeting differences, and what the Telegram Ads Spy archive reveals.
How advertisers reach Belgian audiences on Telegram — one of Europe's toughest gambling and ad-restriction regimes pushing operators offshore, a Dutch/French/German language split, and EU-regulated crypto and trading.
How advertisers reach Irish audiences on Telegram — an English-speaking EU member inside the UK-Ireland creative pool, a fintech and tech-HQ hub, EU-regulated crypto and forex, and offshore gambling under a tightening licensing regime.
How advertisers reach Korean audiences on Telegram — the real-name banking regime that pushes activity offshore, one of the world's most intense retail-crypto cultures, gaming and esports adjacency, and won-denominated payment friction.
Flags — the regions we asked our observer pool for while recording this ad in this channel. That is a label on our request, not a confirmed place of viewing: when no account is available in the requested country the pool silently substitutes another and does not say so. It is not the advertiser's targeting country either. We stopped requesting the region on {date}, so newer creatives carry no flags at all. The channel's main country (by its language) is highlighted in blue; regions under 5% are collapsed into +N.