JavaScript
-
Partial Application vs. Currying: Know the Difference
Two cousins in functional programming that look similar, but serve different purposes. Introduction If you’ve been around JavaScript long enough, you’ve seen both partial application and currying tossed around in blogs, libraries (like Lodash, Ramda), and interviews. Developers often confuse them because both involve breaking down arguments and reusing functions. But here’s the deal: partial…
-
bind, call, and apply Made Simple
How to control this in JavaScript without losing your mind. Introduction Few things confuse JavaScript developers more than this. It behaves differently depending on how a function is called. To make matters worse, we also have three helpers—bind, call, and apply—that let us manually control this. Good news: these aren’t magic. Once you see the patterns,…
-
Function Currying: Fun & Practical
How to break functions into bite-sized calls for flexibility, reuse, and clarity in JavaScript. Introduction At first glance, function currying feels like one of those “fancy functional programming ideas” that you’ll never actually use in day-to-day development. But once you understand it, you’ll see it everywhere — from event handlers to config builders to React hooks. Currying…
-
How to Use Object.create() Like a Pro
Practical patterns, gotchas, and copy-paste snippets to leverage prototypes without classes or constructors. Introduction Most of us learn JavaScript inheritance through ES6 classes or old-school constructor functions. Under the hood, though, it’s all the prototype chain — and the cleanest doorway into that world is Object.create(). Object.create() lets you build objects that delegate to another object (their…
-
ES6 Classes vs. Prototypes: Who Wins?
Understanding the two faces of inheritance in JavaScript — syntax sugar vs raw mechanics, and which one you should use today. Introduction If you’ve been coding in JavaScript for a while, you’ve probably seen both styles: // Prototype-basedfunction Animal(name) { this.name = name;}Animal.prototype.speak = function() { console.log(this.name + ” makes a sound.”);};// ES6 Classclass Dog extends Animal {…
-
Prototype Chain: The Core of JavaScript Inheritance
A deep dive into how objects link together in JavaScript, how __proto__ and prototype really work, and why understanding the prototype chain saves you from bugs and design mistakes. Introduction JavaScript doesn’t have “classes” in the same sense as Java or C++. Under the hood, it’s all about objects linked to other objects. This linking…
-
The Role of Immutability in Better Code
Why treating data as read-only leads to fewer bugs, faster UIs, cleaner tests, and simpler mental models — with practical JavaScript patterns you can copy-paste. Introduction Ask five developers what “immutability” means and you’ll get seven answers. Some say it’s a functional-programming thing. Others think it’s just for Redux. The truth: immutability is a design choice that…
-
Understanding Side Effects in JavaScript
What they are, why they matter, and how to manage them for clean, predictable code. Introduction Every JavaScript app has side effects. You can’t build anything useful without them. Updating the DOM, fetching data, writing to a database, logging errors — all are side effects. But here’s the kicker: uncontrolled side effects make your code unpredictable, hard…
-
Pure Functions vs. Impure Functions: Real Examples
A practical guide to understanding purity in JavaScript, with real-world code and why it matters for maintainable, testable apps. Introduction “Pure functions” get thrown around in every functional programming discussion, but many developers wonder: What actually makes a function pure? And why should I care when building apps? Here’s the simple truth: pure functions are predictable,…
-
Common Async Mistakes and How to Avoid Them
A practical, copy-pastable guide to writing fast, safe, and predictable async JavaScript — without surprises. Introduction Async code is where JavaScript shines — and where bugs love to hide. From “why is this running in order A-D-C-B?” to “why did my server freeze?”, the same mistakes show up again and again across codebases. This guide is your field manual.…
Follow Us
Recent Posts
Categories
- AI Code Assistants 10
- API 12
- Browser 6
- Bugs 1
- Career & Best Practices 7
- Code 1
- CSS 9
- Databases 2
- Deployment 1
- Git & Deployment 2
- HTML 4
- Internet 1
- JavaScript 135
- Networking 2
- Node.js 1
- Operating System 2
- Postman 1
- React.js 4
- Security 2
- Server 1
- SQL 3
- URL 1
- VS Code 2
- VS Code Extenstion 5
- Web Performance & SEO 2
- XSS 3