This is a beginner-friendly course on learning HTML, CSS, and JavaScript interactively by creating functional web apps, such as to-do lists and carousels.

This course will teach you the fundamentals of creating web applications, from the basics of creating web pages with HTML, stylizing content with CSS, all the way to building interactivity into a page using JavaScript in the browser. 
Instead of watching tedious videos and wondering how to translate those videos into real code, you'll be practicing what you learn through interactive, test-based exercises within minutes. 

Along the way, you'll be able to produce functional modules, including an image carousel and a to-do list application. No prior knowledge is needed.

Learn HTML, CSS, and JavaScript from Scratch

# Undefined values
When you declare a variable, its value is **initialized** to whatever value you **assign** by using the `=` sign. The following code snippet will **initialize** the variable as `pi` a **number**. 

Get hands on experience on how to use undefined values or null as a Javascript data type.

Semantic Web Page Layout with HTML

Stylizing HTML Content using CSS

Introduction to Javascript, Basic Data Types and Operators

Javascript Program Flow and Data Structures

Building Interactivity with DOM Manipulation

Create a To-do List Application using HTML, CSS, and Javascript

Wrap Up

Undefined / Null

Undefined values