Variables & Types

1What is JavaScript?✨

JavaScript is a versatile programming language primarily used for creating dynamic content on websites. It allows you to make your web pages interactive and exciting!

2Why Learn JavaScript?🎯

• ✓ Essential for web development
• ✓ Enables interactive web applications
• ✓ Supported by all modern browsers
• ✓ Great for building games and apps

3Your First Program💡

Every programmer writes this first:
console.log("Hello, World!");

This tells JavaScript to display text in the console.

4JavaScript Basics🚀

• Variables store data values
• Use `let`, `const`, or `var` to declare variables
• Types include numbers, strings, booleans, and more

5Variable Examples🔍

Here are some examples of how to declare variables in JavaScript:

let age = 15;  
const name = "Alice";  
var isStudent = true;

You can use these variables to store information about yourself!

6Data Types⭐

JavaScript has several data types:
- Number: represents numeric values (e.g., 10, 3.14)
- String: represents text (e.g., "Hello")
- Boolean: represents true or false values
- Object: a collection of properties (e.g., {name: "Alice", age: 15})

7Type Checking🧩

You can check the type of a variable using the `typeof` operator:

console.log(typeof age); // "number"  
console.log(typeof name); // "string"  
console.log(typeof isStudent); // "boolean"

This helps you understand what kind of data you're working with!

8What You'll Build This Grade🎈

• ✓ Interactive websites that respond to user input
• ✓ Simple games using JavaScript
• ✓ Dynamic web applications
• ✓ Fun projects to showcase your skills