Discover HTML5 Canvas essentials, draw shapes, delve into transformations and animations, and explore interactive applications with advanced mouse and keyboard handling. Gain insights into creating dynamic web graphics.

Kirupa is an MIT grad who works at Microsoft as Senior Program Manager. He has been tinkering with web technologies since 1998. He works on the Edge browser team where he gets to sink his teeth into the cutting-edge web technologies.

HTML5 is taking over the browsers and one of the coolest things in HTML5 is the canvas - the immediate mode drawing surface you have in HTML for bringing pixels to life using JavaScript. It is used to create games, graphs, and animations.

This is an extensive course with interactive playgrounds (so you don't have to install anything). The course can be divided into four parts.

1. Understand basics of Canvas and compare it with DOM.
2. Learn how to draw shapes.
3. Take a deep dive into canvas transformations and animations.
4. Explore advanced mouse and keyboard handling to create truly interactive applications using canvas.

If none of what I just wrote makes sense, then the content here is just what you need 😀 . Let's get started.

HTML5 Canvas: From Noob to Ninja - an interactive deep dive

When relying on the keyboard, the thing you need to keep in mind is that everything from your browser to your operating system is listening to the keyboard as well. Strange and unexpected things happen when your keyboard is used. In our case, the arrow keys are used to scroll your page up and down (and occasionally left and right). Even if users have their focus on the `canvas`, tapping the arrow keys will cause your entire page to scroll if your content gets large enough to display scrollbars. You don't want that.

The way you fix this is very simple. In your `moveSomething` function (aka the event handler), simply add a call to `preventDefault` as shown in line 16:

DOM vs. Canvas

Getting Started with the Canvas

Drawing Basics / Lines

Drawing Curves

Drawing Multiple Things

Drawing Rectangles (and Squares)

Drawing Triangles

Drawing Circles

Modifying How Your Corners Look

Working with Colors

Drawing Text

Drawing Images

Canvas Transformations

Structuring Your Drawing Code

Animating with requestAnimationFrame

Creating Animations on the Canvas

Animating Many Things on the Canvas

Creating Motion Trails

Creating Sprite Animations

Working With the Mouse

Follow the Mouse Cursor

Mouse Follow with Ease

Working With the Keyboard

Moving Shapes Using the Keyboard

Resizing the HTML Canvas Element

Detect Whether a Font is Installed

Preventing Default Keyboard Behavior