| <html> | |
| <body> | |
| <canvas id="canvas" width="500" height="500"></canvas> | |
| <script> | |
| const canvas = document.getElementById('canvas'); | |
| const ctx = canvas.getContext('2d'); | |
| ctx.fillStyle = 'rgb(0, 255, 0)'; | |
| ctx.fillRect(0, 0, 500, 500); | |
| </script> | |
| </body> | |
| </html> |