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Mapping U.S. area codes to IANA time zones in JavaScript (and the 22 multi-zone edge cases)
Under federal telemarketing rules ( 47 CFR 64.1200(c)(1) and the FTC's Telemarketing Sales Rule), outbound telephone solicitations to residential lines are restricted to 8:00 a.m. – 9:00 p.m. in the local time of the called party (and several states enforce stricter windows). When your system only…
Why "1 city = 1 area code" breaks local phone number matching (and how to model overlays in JavaScript)
A common mistake in CRM routing and voice applications is checking whether two phone numbers belong to the same metro area by comparing their first three digits ( npaA === npaB ). That worked before the mid-1990s, when state utility commissions relieved exhausted area codes through geographic…
The Web Is More Than Enough, by Paul Ford
My comment on The Web Is More Than Enough, by Paul Ford — Hacker News. OK, this comment convinced me to give that a shot. Here's a thing I made in Three.js this morning - a Nudibranch themed Faberge Egg: https://static.simonwillison.net/static/2026/Hidden-Reef-Egg... (77KB) I just asked Claude…
How to Build a PDF Storyboard Generator Using JavaScript
PDF files are commonly used to share presentations, scripts, reports, lesson materials, comic pages, and other visual documents. But reviewing a long PDF page by page can take time, especially when so
TypeScript 7.1 Beta: Restores the Compiler API and Makes Vue and Svelte First-Class
TypeScript 7.1 Beta, announced October 20, 2026, restores the compiler API removed in 7.0, now split into separate entry points. It adds content mappers, letting tools like Vue check non-standard files. One Vue project's type checks fell from 14.19 to 3.10 seconds. An editor issue remains open, and…
John Mueller: Robots.txt Can Hide a Popup From Googlebot
Google's John Mueller says blocking an age-verification popup's script with robots.txt generally works. Here's how, and when site owners shouldn't do it.
Virtual Art Museum built with Three js
My wife wanted a website for her artworks. While building the website, I suddenly had this urge to try building a virtual art museum to give her motivation. It turned out not bad. Put the rain mode on if you like cats btw. I'm still trying to optimize the performance as I'm having random fps-drops…
Home Screen launch on iOS 18.6.2
Reproduce how manifest, display mode, icons, storage, and status-bar settings affected Home Screen launch in one iOS 18.6.2 device test.
Notifications in iOS Home Screen apps
Reproduce permission, push-manager exposure, and notificationclick handling measured in one iOS 18.6.2 Home Screen app test.
How We Took Over ChatGPT Accounts
Parameter Labs describe an exploit they found against ChatGPT's implementation of the artifacts pattern (OpenAI used to call this "Canvas" but it looks like the latest revision is called HTML previews ), where interactive custom HTML apps are displayed in a…
No, npm, “estee” is not a typo of “testem”
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Chrome Opens Trial for the Email Verification API: Letting Sites Verify Without Sending Emails
Google has opened a Chrome origin trial for the Email Verification API, a WICG proposal that lets the browser confirm email ownership without sending a message. Gmail is the first provider. Developers add form hints and validate a signed token server-side. Commenters question the privacy benefit…
Introducing tsrs: A port of TypeScript to Rust
Cloudflare is collaborating on tsrs, a Rust port of TypeScript that is up to 8x faster and uses 70% less memory.
Ranking proposals for Interop 2027
The Firefox team are asking us to weigh in on proposals for Interop 2027—what features should browsers be concentrating on implementing or improving. Here are my top five : Web app installation via and navigator.install() . Prompts the user to install a progressive web app. Speculation Rules API…
Employees are vibe-coding their own apps. Cloudflare open-sources Void to give IT a handle on them
Many companies are keen to let employees build their own applications using AI, even those with little or no programming The post Employees are vibe-coding their own apps. Cloudflare open-sources Void to give IT a handle on them appeared first on The New Stack .
Deploy with Void
Introducing Void: an open-source SDK, CLI, and self-hosted platform for building full-stack Vite apps and deploying them to Cloudflare.
デスクトップアプリが6MBで済む世界。TinyJSはElectronの150MBに何を問うのか
Electronアプリ1つが150MB以上になるのは、全アプリがChromiumブラウザを丸ごと抱えているから。TinyJSはOSのWebViewだけを使い、約6MBでデスクトップアプリを動かす。JavaScriptだけで書ける。
Cloudflare acquires Node.js creator’s startup that copied its serverless playbook
Cloudflare is buying the startup co-founded by Node.js creator Ryan Dahl, a longtime competitor that recently built its own open-source The post Cloudflare acquires Node.js creator’s startup that copied its serverless playbook appeared first on The New Stack .
Fixing Top-Level Await in Safari
WebKit for Safari 27 adds full spec compliance for top-level `await`.
Creating Web Widgets Using the Document Picture-in-Picture API
The general idea is that we create a Document Picture-in-Picture window (DPIP window), and then we put HTML, CSS, and JavaScript into it. Creating Web Widgets Using the Document Picture-in-Picture API originally handwritten and published with love on CSS-Tricks . You should really get the…
