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Webdev

107 articles on Webdev — each with a runnable playground and a quiz.

Articles

HTML

You built your modal with a <div> and a focus trap library. The native <dialog> does all of that.

Aug 8 · 5 min JavaScript

Stop importing uuid. crypto.randomUUID() has been native since 2021.

Aug 8 · 3 min JavaScript

You're installing date-fns for 'X hours ago'. Intl.RelativeTimeFormat does it natively.

Aug 7 · 4 min JavaScript

You use obj.hasOwnProperty(key) to check property ownership. It can silently fail. Object.hasOwn() is the safe replacement.

Aug 6 · 4 min CSS

Container queries can check more than size — style queries let components read custom property values

Aug 6 · 4 min JavaScript

You're collecting async iterable results with a for-await loop. Array.fromAsync does it in one call.

Aug 5 · 4 min CSS

Your browser renders everything, even what you can't see — content-visibility: auto fixes that

Aug 4 · 5 min Security

CORS Explained: The Complete Guide (with Cheat Sheet)

Aug 3 · 14 min JavaScript

Your UI is freezing because you never gave the browser a break

Aug 3 · 5 min CSS

You're writing dark-mode colors twice. light-dark() fixes that.

Aug 2 · 5 min JavaScript

You've been wrapping new URL() in try/catch. URL.parse() does it natively.

Aug 1 · 5 min CSS

CSS has no native scoping. @scope changes that.

Jul 31 · 5 min
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