JavaScript Foundations

🔹 Introduction to JavaScript

• What is JavaScript?
• JavaScript vs HTML vs CSS
• Where JavaScript runs (Browser, Server)
• JavaScript Engine (Brief)
• Ways to write JavaScript
  • Inline
  • Internal
  • External
• script tag & file linking
• Console & Developer Tools

🔹 Variables in JavaScript

• What is a variable?
• Variable declaration & initialization
• Naming rules & best practices

🔹 var, let, const

• var keyword
• let keyword
• const keyword
• Difference: var vs let vs const
• Re-declaration & re-assignment rules