JavaScript Fundamentals: Variables, Types, and Control Flow

This video introduces the building blocks of JavaScript, covering variable declarations with var, let, and const, and JavaScript's core data types including strings, numbers, booleans, null, undefined, and objects. You'll learn how type coercion works and how to use comparison operators safely. The video also walks through control flow structures including if/else, switch statements, and loops such as for, while, and for...of.