JavaScript DOM lessons

🟦 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

Github https://github.com/lsvekis/JavaScript-DOM-Exercises/ Welcome back to the next chapter of the 100-exercise JavaScript DOM & Canvas series! If you’ve been following along, you already know the mission: ✨ Learn real JavaScript by building small, visual, interactive projects — with no frameworks and no complexity. Just vanilla JS, DOM APIs, Canvas 2D, and Web APIs, the way … Read more

Github https://github.com/lsvekis/JavaScript-DOM-Exercises/ If you’ve ever tried to learn JavaScript and thought, “I get the syntax, but I’m not sure how to actually build things,” this set of mini-games is for you. Exercises 81–90 are part of a larger “JavaScript DOM Games” series: self-contained, vanilla JS projects that live in a single HTML file. No build … Read more