JavaScript is the language most of this blog's readers touch every day — and it's also one of the most commonly asked-about topics in technical interviews. This page collects everything we've written on it in one place, organized by where you probably want to start.
1. Fundamentals
Core language concepts, explained without assuming prior JS experience.
Javascript Basics in 20 Min
A fast-paced rundown of the core syntax and concepts you need before anything else clicks.Javascript
An overview of what JavaScript is and where it fits in web development.
2. Interview Prep
The questions that actually come up in JavaScript interviews, with working code for each answer.
Top JavaScript Interview Questions & Answers
Data types,==vs===, closures,let/const/var, the event loop, promises,map/filter/forEach, destructuring, and more.
Also see our Data Structures & Algorithms guide — every code example there is written in JavaScript.
3. Creative & Visual JavaScript
Using JavaScript for graphics and interaction, beyond typical app logic.
How to Draw Animated Circles in HTML5 Canvas
A hands-on intro to the Canvas API and simple animation loops.
What's Next
More JavaScript content is on the way — async patterns, framework-specific deep dives, and more interview prep. New posts are tagged with the JavaScript label, or just bookmark this page.
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