JavaScript
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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…
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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…
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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…
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How to Chain Promises Like a Boss
Practical patterns for sequencing, parallelizing, error-handling, and hardening async flows — without the pyramid of doom. Introduction Promises are the backbone of modern…
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Async/Await Internals: How it Actually Works
A plain-English deep dive into what really happens when you await — from Promises and microtasks to desugaring and generator runners. Introduction…
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How Callback Hell Happens & How to Fix It
A practical, copy-pastable guide to escaping the “pyramid of doom” with Promises, async/await, and better async design. Introduction We’ve all seen…
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Promises from Scratch: Zero Magic
Building your own JavaScript Promise implementation step by step — to truly understand how they work under the hood. Introduction Promises are everywhere…
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Hoisting in JavaScript: Still Confusing in 2025?
A modern, developer-friendly guide to one of JavaScript’s oldest quirks — explained with real-world examples. Introduction Let’s be honest: JavaScript hoisting is…
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Why JavaScript is Single-Threaded — But Not Really
The real story behind “single thread,” the event loop, and how JS secretly gets work done in parallel. Introduction JavaScript…
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Call Stack vs. Task Queue: How JS Multitasks
A deep dive into how JavaScript “fakes” multitasking with a single thread, and why understanding it saves you from async…
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