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…
HTTP status codes
HTTP status codes are three-digit numbers returned by a server to indicate the status of a client's request. Understanding these codes is crucial for web developers as they provide insights into the…
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…
CSS Grid vs Flexbox
Flexbox and Grid both showed up to solve the same frustration: laying out a page used to mean floats, clearfixes, and a lot of guessing. But they aren't interchangeable — each one is built for a…
Customizing Scrollbars
For years, customizing scrollbars was a fragmented experience—Firefox had scrollbar-width and scrollbar-color, while WebKit browsers (Chrome, Edge, Safari) required ::-webkit-scrollbar. But now, as…
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.