Posts tagged #javascript — Page 2

The browser can now strip XSS from an HTML string during parsing. Here's how setHTML works, why its config can only narrow the allowlist, and how to ship it before Safari catches up.

Iterator helpers bring map, filter, take, and drop to any iterator without spreading into an array first. They went Baseline in 2025, and they change how you handle Maps, Sets, and generators.

Chrome ships the Soft Navigations API unflagged in 151, giving single-page apps a standardized way to measure LCP, INP, and CLS per route change instead of only on the first load.

Shadow DOM used to mean a blank page until your bundle loaded. The shadowrootmode attribute changed that, and it has been in every major browser since early 2024.

The Origin Private File System gives you byte-level, synchronous file I/O in the browser. Here's how it works, when to reach for it, and why it's the reason SQLite runs well on the web now.

URLPattern went Baseline in late 2025, giving the platform a native, framework-free way to match and parse URLs. Here is how it works and where it earns its place.

The Invoker Commands API lets a button declare what it controls with command and commandfor, replacing modal and popover glue code with plain HTML.

Fallow is a Rust-native tool that maps your whole TS/JS codebase to catch dead code, duplication, and architecture drift. Here's how it fits alongside ESLint, Prettier, and agent guidelines when you're reviewing PRs you didn't write.

The Navigation API hit Baseline in early 2026, giving SPAs a single, purpose-built place to intercept and manage routing. Here's why it finally replaces the History API.