| <body> | |
| <canvas id="target" width="400" height="400"></canvas> | |
| <script> | |
| const targetCanvas = document.getElementById('target'); | |
| const target = targetCanvas.getContext('2d'); | |
| const canvasWidth = targetCanvas.width; | |
| const canvasHeight = targetCanvas.height | |
| target.fillStyle = 'green'; | |
| target.fillRect(0, 0, canvasWidth, canvasHeight); | |
| </script> | |
| </body> |