<!DOCTYPE html> | |
<html> | |
<body> | |
<canvas id='output' width='100' height='100'></canvas> | |
<script> | |
var aCanvas = document.getElementById('output'); | |
var ctx = aCanvas.getContext('2d'); | |
ctx.fillStyle = 'green'; | |
ctx.fillRect(20, 20, 60, 60); | |
ctx.clearRect(25, 25, 50, 50); | |
</script> | |
</body> | |
</html> |