💻 Introduction to JavaScript

JavaScript is the language that makes websites interactive. It runs in your browser and can do things like respond to clicks, change content dynamically, and communicate with servers.

📚 Example 1: Hello, World!

// Log a message to the console
console.log("Hello, World!");

// Show an alert popup
alert("Hello from JavaScript!");

Output will appear here...

📂 Example 2: Variables and Types

// Declare variables
let name = "Alex";
const age = 22;
let isStudent = true;

// Log variables
console.log("Name:", name);
console.log("Age:", age);
console.log("Is student?", isStudent);

Output will appear here...

⚡ Quick Tips

Use console.log() to print messages in the browser console.
let and const declare variables — use const for values that don’t change.
JavaScript is loosely typed: variables can hold any data type.
Alerts are good for quick popups but annoying for users — mainly use console logs for debugging.

💡 Pro Tip: Open DevTools (F12) → Console tab to see output from console.log().