Tutorial
JavaScript using declarations: automatic cleanup without finally
Learn JavaScript's using and await using declarations, Symbol.dispose and DisposableStack, with tested browser recipes and October 2026 support data.
By Cloudsoft Zone
Guides topic
JavaScript
JavaScript tutorials for beginners and professionals: the language, the DOM, arrays, functions and modern syntax.
- articles
- 64
Industry update
ECMAScript 2026 is final: 7 new JavaScript features explained
ES2026 adds Map upserts, Iterator.concat, Base64 on Uint8Array, JSON source text, Math.sumPrecise, Error.isError and Array.fromAsync. Examples and support.
By Cloudsoft Zone
Architecture guide
Ship JavaScript without a bundler: import maps and JSON modules
How to structure a front end as native ES modules: import maps for bare imports, JSON modules, modulepreload against waterfalls, and cache-busting.
By Cloudsoft Zone
Comparison
structuredClone vs JSON vs spread: deep copy JavaScript safely
Spread is shallow, JSON loses dates, Maps, Sets and undefined, and structuredClone keeps them. A tested comparison of JavaScript copy methods and their limits.
By Cloudsoft Zone
Troubleshooting guide
Fix 'Uncaught (in promise)': find every unhandled rejection
Why browsers log Uncaught (in promise), the five code patterns behind most unhandled rejections, how to find them in DevTools, and a safe global handler.
By Cloudsoft Zone
Industry update
Next.js 16.4: what's new and should you upgrade from 16.3?
Next.js 16.4 shrinks bundles and the Turbopack cache, ships React 19.3 and turns on strict route matching. What we measured, what breaks and how to upgrade.
By Cloudsoft Zone
JavaScript Temporal in 2026: how to replace Date in browser code
Temporal is now a Stage 4 standard shipping in Chrome, Edge and Firefox, but not yet in Safari. Learn which Temporal type to use, how it handles time zones and daylight saving time, and how to adopt it safely with a polyfill.
By Cloudsoft Zone
Resource guide
Free learning paths for web developers in 2026: freeCodeCamp, Odin Project, CS50
Six free, checked learning resources for aspiring web developers: freeCodeCamp, The Odin Project, CS50x, Full Stack Open, javascript.info and MIT OpenCourseWare, with what each teaches, what costs extra and how to combine them.
By Cloudsoft Zone
Resource guide
How to cut LLM API costs with model choice, prompt caching and batching
A practical guide to lowering Claude and OpenAI API bills: measure token usage, route tasks to cheaper models, cache repeated prompt prefixes, move non-urgent work to the 50%-off batch APIs, and avoid the mistakes that defeat caching.
By Cloudsoft Zone
Tutorial
How to build a tool-use loop with the Claude API in Node.js
A step-by-step Node.js tutorial for Claude tool use: define a strict tool schema, run the request and result loop, handle every stop reason, report tool errors, and avoid the forced-tool 400 error on the Claude 5.5 models.
By Cloudsoft Zone
Tutorial
How to check your resource links for breakage with a Node.js 24 script
Build a dependency-free link checker in Node.js 24 that extracts https links from a Markdown file, checks them in parallel with timeouts, reports redirects and failures, and runs weekly in GitHub Actions.
By Cloudsoft Zone
Resource guide
Modern JavaScript built-ins you can use in 2026: a browser support checklist
A practical October 2026 checklist of modern JavaScript built-ins, from Object.groupBy and Set methods to iterator helpers, RegExp.escape and Base64 on Uint8Array, with first supporting browser versions and what still needs a fallback.
By Cloudsoft Zone
Showing 12 articles