017 JS | Variables | var vs let vs const Simplified | CodeNook Vivek Sharma скачать в хорошем качестве

017 JS | Variables | var vs let vs const Simplified | CodeNook Vivek Sharma

⚡ Variables are the *foundation of JavaScript programming* — everything you code revolves around them! But do you really know how they work under the hood? In this video, we’ll break down *JavaScript Variables* — how to declare them, how they store data, and the real difference between `var`, `let`, and `const`. 🔥 What you’ll learn in this video: ✅ *What is a Variable?* A variable is a *container for storing data values* in your program. Example: `let name = "Vivek";` ✅ *Types of Variable Declarations* `var` → function-scoped, older version `let` → block-scoped, modern and flexible `const` → block-scoped, constant value that cannot be reassigned ✅ *Key Differences: var vs let vs const* Scope differences (function vs block) Redeclaration and reassignment rules Hoisting behaviour ✅ *Best Practices* Always use `let` and `const` in modern JS Avoid `var` unless necessary for legacy code Use clear, meaningful variable names ⚡ By the end of this video, you’ll *master variables* and understand how JavaScript actually handles data in memory. 👉 Don’t forget to *Like, Comment, and Subscribe* for more *JavaScript fundamentals* and coding insights! #JavaScript #JavaScriptVariables #LearnJavaScript #varLetConst #CodingBasics #WebDevelopment #Programming