What is HTML Canvas?
The HTML<canvas>
element is used to draw graphics, on the fly, via JavaScript.
The <canvas>
element is only a container for graphics. You must use JavaScript to actually draw the graphics.
Canvas has several methods for drawing paths, boxes, circles, text, and adding images.
Canvas Examples
A canvas is a rectangular area on an HTML page. By default, a canvas has no border and no content.
The markup looks like this:
<canvas id="myCanvas" width="200" height="100"></canvas>
Note: Always specify an id attribute (to be referred to in a script), and a width and height attribute to define the size of the canvas. To add a border, use the style attribute.
Here is an example of a basic, empty canvas:
Add a JavaScript
Draw a Line
<script>
var c = document.getElementById("myCanvas");
var ctx = c.getContext("2d");
ctx.moveTo(0, 0);
ctx.lineTo(200, 100);
ctx.stroke();
</script>
Top comments (2)
Make sure to understand that drawing on a canvas follows a simple "painting" philosophy, drawing over a previous drawing, and you can do plenty of interesting stuff...
(an image is supposed to appear below, but...)
Ok