<!DOCTYPE html>
<html>
<head>
<title>HTML Canvas Tag</title>
</head>
<body>
<h3>WIKITECHY CANVAS </h3>
<canvas id="mytechCanvas">
</canvas>
<script>
var a=document.getElementById('mytechCanvas');
var wiki=a.getContext('2d');
wiki.fillStyle='purple';
wiki.fillRect(0,0,100,200);
</script>
</body>
</html>
<html>
<head>
<title>HTML Canvas Tag</title>
</head>
<body>
<h3>WIKITECHY CANVAS </h3>
<canvas id="mytechCanvas">
</canvas>
<script>
var a=document.getElementById('mytechCanvas');
var wiki=a.getContext('2d');
wiki.fillStyle='purple';
wiki.fillRect(0,0,100,200);
</script>
</body>
</html>
Result