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Understanding the Math Object and Utility Functions in JavaScript (Beginner’s Guide)

Numbers play a big part in most JavaScript programs. Whether you’re calculating prices, measuring time, or creating animations, math is everywhere in programming. JavaScript makes working with numbers simple and efficient, using the Math object, a built-in feature that provides many helpful methods for mathematical operations.In this beginner’s guide, you’ll learn what the Math object is, how it works, and how it helps make your JavaScript code more efficient. What You’ll LearnAt the end of

Explaining JSON.stringify() - The basics of converting objects to strings

IntroductionWhile developing React, I had the opportunity to use key={JSON.stringify(filters)} in a component, so I'd like to summarize it here. What is JSON.stringify()?JSON.stringify() is a JavaScript function that converts objects and arrays to strings. Basic Usageconst user = { name: "calros", age: 20 };const json = JSON.stringify(user);console.log(json);// → '{"name":"calros","age":20}'The object is converted to a JSON-formatted string. SummaryJSON.stringify() is a func

I Deleted Half My Code When I Switched to Signal Forms

If you've ever built a custom control using ControlValueAccessor, you know the drill. It requires several methods, properties, and even providers. Often, it can be a lot just to update a simple value. Well, in Angular 21, that's beginning to change. In this tutorial, we'll migrate a custom quantity control step by step from CVA to signals so you can see just how clean and simple things can become. The Quantity Control in ActionHere's the little demo app that we'll be using in this example:I

AL MUKTADIR ANMON'S LIFE! 🤍

Top 9 Game-Changing Features in React 19 You Need to Know

Here is a lot of excitement in the React world, and for good reason. It's not just another small update; React 19 is here. This version is a big change because it focuses on making things easier for developers and giving them big performance boosts right away. A lot of once experimental features are now stable, giving every React developer access to powerful tools.React 19 is here to help if you've ever felt stuck trying to optimise things by hand or wanted an easier way to do things like submit

Building a Gas Optimization Tool: Technical Deep Dive

Ethereum gas prices follow predictable daily patterns, but most users have no visibility into how much poor timing costs them. Here's how I built a tool to solve this problem. The ProblemEthereum gas prices vary dramatically throughout the day:Peak hours (2-6pm EST): 40-100 GweiOff-peak (nights/weekends): 5-15 GweiMost users transact when convenient for them, not when economically optimal. Testing shows users commonly overpay 60-80% due to timing alone. The Solution: GasGuardA tool tha

React - localStorage vs. Cookies: A Love Triangle with Your JWT

The Great Token Debate: Rethinking Authentication Storage in Modern React Applications Introduction: The Security Dilemma Every Developer FacesPicture this: You're building a beautiful React application. Authentication works flawlessly. Users can log in, their sessions persist across page refreshes, and everything feels smooth. Then someone asks the dreaded question: "Where are you storing those tokens?" Suddenly, you're caught in one of the most contentious debates in modern web deve

Alaska Airlines' statement on IT outage

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The Complete Guide to Integrating a Geolocation API with JavaScript

In a world dominated by data-driven applications, location-based intelligence has become a necessity for developers. From delivering personalized content to tracking user activity, geolocation plays a key role in modern web development.JavaScript, being one of the most versatile languages for building interactive web experiences, works seamlessly with APIs that deliver real-time location data. Among the most effective tools available is an IP geolocation API, which enables developers to locate u

Skills Beat MCPs, Bun Ships Hard

Mitchell Hashimoto drops a masterclass on shipping real features with AI—no hype, just pragmatic vibing through a non-trivial Ghostty update. Meanwhile, Andreas Thomas walks us through why Unkey ditched serverless after two years of fighting latency demons (spoiler: 6x performance boost with good old stateful servers). Calvin French-Owen lands the perfect reality check: AI agents don't remove the human job of thinking—they just shift where you spend those mental cycles.Simon Willison delivers ag

RFC 863 – Discard Protocol

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⚔️ I Built “Dev Battle” — a Real-Time Coding Challenge Platform Using Next.js + Firebase + socket

Hey devs 👋I’m Parag Bhosale, a React and Next.js developer who loves building things that make coding fun.Over the past few weeks, I’ve been working on something exciting — a platform called Dev Battle, where developers can compete in real-time coding challenges, fix bugs, and climb the leaderboard 🏆🎮 What Is Dev Battle?Dev Battle is a real-time coding challenge app inspired by platforms like CodeWars — but with a twist.You can:👥 Log in using Google or email⚔️ Challenge your friends to fix codin

📌 What you'll learn: - ⚙️ Why micro-frontends created scaling chaos - 🧩 The tradeoffs teams didn’t expect - 🚀 What’s replacing them in 2025 - 💡 Real-world lessons from production apps

💥 Why Micro-Frontends Failed Us (and What We’re Trying Next) Taha Majlesi Pour ・ Oct 24

Roc Camera

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Fast-DLLM: Training-Free Acceleration of Diffusion LLM

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Computer science courses that don't exist, but should (2015)

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Counter-Strike's player economy is in a multi-billion dollar freefall

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How to Contribute to Pixalo — A Lightweight 2D Game Engine Built for Speed

Thank you for contributing to Pixalo!This guide helps developers understand how to collaborate, structure changes, and submit pull requests properly. 🧭 General PrinciplesPixalo is a lightweight and high-performance 2D game engine. Every line of code must be purposeful, clean, and efficient.Collaboration should always be respectful and professional. Please use Issues and Discussions on GitHub for communication.If you plan to introduce major architectural changes, open a discussion before mak

React Flow, open source libraries for node-based UIs with React or Svelte

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The Artisan's Forge: Extending Node.js with the Power of Native Addons

You stand at the peak of JavaScript mastery. Your Node.js applications are optimized, your architectures are sound, and your async/await patterns are poetry. Yet, sometimes, you feel a constraint—a gentle, persistent hum from the V8 engine, reminding you that for all its power, it is still a virtual machine.There are tasks that live in a different realm:Crushing CPU-bound workloads that block the event loop.Performing real-time image or audio processing.Integrating with a legacy C++ library that