| <!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> |