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Javascript

Overview

A curated list of most asked and must know concepts of JavaScript

JavaScript Track

Core Concepts + Interview Prep

Start from fundamentals, then move to async behavior, browser internals, and practical machine-coding patterns.

1. Arrays and Objects

Foundation for problem solving and data transformations.

2. Functions and Closures

Function types, callback patterns, closures, and scope.

3. Hoisting and Event Loop

Execution model, call stack behavior, and async scheduling.

4. Promises and Browser APIs

Promises, callback hell escape patterns, and browser behavior.

Deep Dives

JS Engines

Parsing, compilation, runtime execution, and optimization.

Closures and Events

Closures in interviews, events, and practical behavior.

Debounce and Throttle

Essential machine-coding and frontend performance techniques.

Browsers and CORS

Browser internals, networking, and web security basics.