Welcome to CANVaS 2.0! CANVaS 2.0 is the online application of the Virginia Child and Adolescent Needs and Strengths (CANS) assessment, the mandatory uniform assessment required for all children and youth served by the Children’s Services Act (CSA) (§2.2-5200 et. Recommend a tablet/stylus for drawing SmoothDraw 4.0.5. Download Installer (2MB) Binary Zip Package (2MB) This package does not include an installer, so you have to ensure your system has.NET 4.0 installed. XP SP3/Vista SP1/Win7 -.NET Framework 4.0 - Recommend a tablet/stylus for drawing SmoothDraw 3.2.11. Download (2MB) Details / Online.
The HTML
<canvas> element is used to draw graphics on a web page.
The graphic to the left is created with
<canvas> . It shows four elements: a red rectangle, a gradient rectangle, a multicolor rectangle, and a multicolor text.
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.
Browser Support
The numbers in the table specify the first browser version that fully supports the
<canvas> element.
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 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.
Canva Windows 10 Download
Here is an example of a basic, empty canvas:
Example
<canvas width='200' height='100'> Try it Yourself »
</canvas> Add a JavaScript
After creating the rectangular canvas area, you must add a JavaScript to do the drawing.
Here are some examples:
Canva Tutorial 1.0Draw a LineExample
<script> Try it Yourself »
var c = document.getElementById('myCanvas'); var ctx = c.getContext('2d'); ctx.moveTo(0, 0); ctx.lineTo(200, 100); ctx.stroke(); </script> Draw a CircleExample
<script> Try it Yourself »
var c = document.getElementById('myCanvas'); var ctx = c.getContext('2d'); ctx.beginPath(); ctx.arc(95, 50, 40, 0, 2 * Math.PI); ctx.stroke(); </script> Draw a TextExample
<script> Try it Yourself »
var c = document.getElementById('myCanvas'); var ctx = c.getContext('2d'); ctx.font = '30px Arial'; ctx.fillText('Hello World', 10, 50); </script> Stroke TextExample
<script> Try it Yourself »
var c = document.getElementById('myCanvas'); var ctx = c.getContext('2d'); ctx.font = '30px Arial'; ctx.strokeText('Hello World', 10, 50); </script> Draw Linear GradientExample
<script> Try it Yourself »
var c = document.getElementById('myCanvas'); var ctx = c.getContext('2d'); // Create gradient var grd = ctx.createLinearGradient(0, 0, 200, 0); grd.addColorStop(0, 'red'); grd.addColorStop(1, 'white'); // Fill with gradient ctx.fillStyle = grd; ctx.fillRect(10, 10, 150, 80); </script> Draw Circular GradientExample
<script> Try it Yourself »
var c = document.getElementById('myCanvas'); var ctx = c.getContext('2d'); // Create gradient var grd = ctx.createRadialGradient(75, 50, 5, 90, 60, 100); grd.addColorStop(0, 'red'); grd.addColorStop(1, 'white'); // Fill with gradient ctx.fillStyle = grd; ctx.fillRect(10, 10, 150, 80); </script> Canvas DownloadDraw Image
<script> Try it Yourself »
var c = document.getElementById('myCanvas'); var ctx = c.getContext('2d'); var img = document.getElementById('scream'); ctx.drawImage(img, 10, 10); </script> HTML Canvas Tutorial
To learn more about
<canvas> , please read our HTML Canvas Tutorial.
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