HTML Canvas Tutorial
Today HTML <canvas> element are using to draw graphics on a web page.
The graphic to the left is created with <canvas>. It shows four elements: a glow rectangle
What is HTML Canvas?
The HTML <canvas> element is used to draw graphics, running, fly, use script JavaScript.
The <canvas> element is only a container for graphics. You must use a script to actually draw the graphics.
Canvas has several methods for drawing adding images boxes, circles, text .
Browser Support
The numbers in the table specify the first browser version that fully supports the <canvas> element.
| Element | |||||
|---|---|---|---|---|---|
| <canvas> | 5 | 9.0 | 2.0 | 3.1 | 9.0 |
HTML Canvas Can Draw Graphics
Canvas has great features for graphical data presentation with an imagery of graphs and charts.
HTML Canvas Can Draw Text
Canvas can be draw text, with
HTML Canvas Can be Animated
Canvas objects can move.everywhere you want
HTML Canvas Can be Interactive
Canvas can respond to JavaScript events.
Canvas can respond to any user action (key clicks, mouse clicks, button clicks, finger movement).
HTML Canvas Can be Used in Games
Canvas' methods for animations, offer a lot of possibilities for HTML gaming applications.
Canvas Example
In HTML, a <canvas> element looks like this:
<canvas id="myCanvas" width="200" height="100"></canvas>
The <canvas> element must have an id attribute so it can be referred to by JavaScript.
The width and height attribute is necessary to define the size of the canvas.
To add a border, use a style attribute:
Example
<canvas id="myCanvas" width="200" height="100"
style="border:1px solid
#000000;">
</canvas>
The next chapters show how to draw on the canvas.