JavaScript DOM lessons

🟦 JavaScript Deep Dive — Issue #7 Closures, Scope & Memory: What Really Happens Under the Hood Why closures are powerful, dangerous, and often misunderstood Closures are one of JavaScript’s greatest superpowers — and one of its most common sources of bugs, memory leaks, and confusion. Most developers use closures.Far fewer truly understand what they … Read more

🟦 JavaScript Deep Dive — Issue #6 How JavaScript Engines Optimize Your Code A practical V8 (and JS engine) deep dive every serious JS dev should understand Most JavaScript developers write code assuming the engine will “just handle it.” And often, it does. But once performance matters — large apps, data-heavy UIs, animations, AI workloads, … Read more

🟦 JavaScript Deep Dive — Issue #5 Beyond Promises: Advanced Async & Concurrency Patterns in JavaScript How modern JS handles real-world async workloads at scale Promises and async/await made JavaScript easier to read — but they didn’t magically solve concurrency, coordination, cancellation, or backpressure. As apps grow more complex (AI calls, streaming APIs, real-time UIs, … Read more

🟦 JavaScript Deep Dive — Issue #4 Functional Programming Superpowers in JavaScript How FP techniques make your code cleaner, safer, more predictable — and easier to scale. Functional Programming (FP) isn’t a trend.It’s a set of powerful patterns that make code easier to reason about, test, reuse, and extend. Modern JavaScript frameworks — React, Svelte, … Read more

🟦 JavaScript Deep Dive — Issue #3 Modern JavaScript Performance Patterns (2025 Edition) How to Write Faster, Smoother, More Efficient JS in a Modern Front-End World JavaScript performance isn’t just about shaving a few milliseconds.It affects: And with modern apps becoming more interactive — and LLM-driven apps doing async work at scale — understanding performance … Read more

Mastering the Event Loop: Microtasks, Macrotasks & Hidden Async Behaviors If there’s one concept that separates intermediate JavaScript developers from true experts, it’s this: Understanding the event loop — not just at a surface level, but deeply. Every framework, every asynchronous operation, every browser interaction ultimately depends on the event loop.But many developers still can’t … Read more

Issue 1 — The Strange Parts of JavaScript: Why the Language Behaves Like That Summary:A tour through the quirkiest (but important) parts of JavaScript — coercion traps, weird equality rules, hoisting surprises, closure edge cases, and prototype madness. Key Learning: Outline: Issue 2 — Mastering the Event Loop: Microtasks, Macrotasks & Performance Summary:A deep dive … Read more

1. Sum of Two Numbers (Basics: Variables, Input, Output) Learning Objectives Task Ask the user for two numbers, add them, and show the result. Sample Solution Explanation 2. Even or Odd? (Conditionals) Learning Objectives Task Ask the user for a number and tell them whether it’s even or odd. Sample Solution Explanation 3. Countdown (Loops) … Read more