<!DOCTYPE html> | |
<html> | |
<body> | |
<canvas id ="output" width="100" height="100" style="background: blue;"></canvas> | |
<script> | |
var canvas = document.getElementById('output'); | |
var ctx = canvas.getContext('2d'); | |
ctx.fillStyle = 'green'; | |
ctx.fillRect(0, 0, 100, 100); | |
ctx.clearRect(40, 40, 20, 20); | |
ctx.strokeStyle = 'red'; | |
ctx.lineWidth = 4; | |
ctx.strokeRect(20, 20, 60, 60); | |
</script> | |
</body> | |
</html> |