Modern JavaScript APIs in Action: A Practical Guide to the Browser and Language Features You'll Actually Use (Practical Programming) by Jacob Ren
English | July 28, 2026 | ASIN: B0HBWXQYBZ | 147 pages | EPUB | 0.19 Mb
Stop reaching for a library. The browser already has the tool you need.
Every day, developers install npm packages to solve problems the browser already solved years ago. Need to copy text to the clipboard? There's a built-in API for that. Need to lazy-load images or watch an element resize? Built in. Need to store structured data offline, cancel a fetch request, or run heavy code without freezing the page? All built in, all ready to use right now, with zero dependencies.
Modern JavaScript APIs in Action is a practical, no-fluff guide to the browser and language features working developers actually reach for on the job. Every chapter tackles one API through a real-world scenario, not an abstract toy example, and ends with a hands-on mini-project. By the final chapter, you'll combine everything into a complete Link Saver app with offline storage, drag-and-drop import, and a lazy-loaded list.
What you'll learn:
Master the Fetch API, including error handling, cancellation, and timeouts
Write clean async code with Promise.all, allSettled, race, and any
Build lazy-loading and scroll effects with Intersection Observer
Persist data with localStorage, sessionStorage, and IndexedDB
Format dates and currency correctly with Intl and Temporal
Implement copy-to-clipboard buttons the modern way
Handle drag-and-drop file uploads with validation and previews
Build location-aware features with the Geolocation API
Show smart notifications that respect what the user is looking at
Run heavy computations off the main thread with Web Workers
Watch the DOM and element sizes with Mutation and Resize Observers
Sync UI state to the URL with URLSearchParams
Part of the Practical Programming Series, built for developers who want to write less code, ship fewer dependencies, and actually understand the platform they're building on.
Links are Interchangeable - Single Extraction
