The DOM Canvas Object is used to represent the HTML <Canvas> element. The <canvas> tag is used to draw graphics in the document using javascript. It is new in HTML5. The canvas element is accessed by getElementById().
Syntax:
accessed by getElementById("id").
Where “id” is the ID assigned to the Canvas tag.
Example 1: In this example, we will use the DOM Canvas Object.
HTML
<!DOCTYPE html>
<html>
<head>
<title>canvas Tag</title>
</head>
<body>
<h1 style="color:green; Font-size:35px;">
GeeksForGeeks
</h1>
<h2>DOM Canvas Object</h2>
<canvas id="geeks"
height="200"
width="200"
style="border:1px solid green">
</canvas>
<br>
<br>
<button onclick="myGeeks()">Submit</button>
<script>
function myGeeks() {
let gfg = document.getElementById("geeks");
let sudo = gfg.getContext("2d");
sudo.beginPath();
sudo.arc(100, 100, 90, 0, 2 * Math.PI);
sudo.stroke();
}
</script>
</body>
</html>
|
Output:
Example 2: Canvas Object can be created by using the document.createElement method.
HTML
<!DOCTYPE html>
<html>
<head>
<style>
canvas {
border: 3px solid black;
}
</style>
</head>
<body>
<h1 style="color: green; font-size:40px;">
GeeksForGeeks
</h1>
<h2>DOM Canvas Object</h2>
<button onclick="myGeeks()">
Submit
</button>
<script>
function myGeeks() {
let geeks = document.createElement("CANVAS");
let gfg = geeks.getContext("2d");
gfg.fillStyle = "green";
gfg.fillRect(40, 40, 200, 100);
document.body.appendChild(geeks);
}
</script>
</body>
</html>
|
Output:
Supported Browsers: The browser supported by DOM Canvas Object are listed below:
- Google Chrome 1
- Edge 12
- Internet Explorer 9
- Firefox 1.5
- Opera 9
- Safari 2
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