Array Methods in Action
JavaScript array methods aren’t just theoretical—they shine when handling real data. Let’s see some hands-on examples. 1. Fetching and Processing API Data Imagine you fetch a list of users from an…
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Dynamic TOC, ScrollSpy, and Code Blocks
If you’re building a blog or documentation site, you’ve probably faced these recurring challenges: Long pages with many headings, making it hard to navigate. Code blocks that need syntax…
A Practical Guide to the Fetch API
fetch() replaced XMLHttpRequest as the standard way to make HTTP requests in the browser. The basics are simple, but a few sharp edges trip people up — especially around error handling. The basic…
Debounce and Throttle
Some browser events fire far more often than you need them to. scroll, resize, and keyup on a search box can all trigger dozens of times a second. Wiring a handler directly to one of these is a fast…
JavaScript Classes, Explained
A class in JavaScript is mostly a nicer way to write what prototypes were already doing.
Understanding JavaScript Closures
A closure happens whenever a function is defined inside another function and keeps access to the outer function's variables, even after the outer function has finished running.
Understanding JavaScript Promises
Promises are the foundation of modern asynchronous JavaScript and power async/await under the hood.
JavaScript Set
A Set is a collection of values where each value may occur only once
JavaScript Promises
A complete guide to JavaScript Promises, from the basics of then/catch to newer additions like Promise.any, Promise.withResolvers, and Promise.try.