| <body> | |
| <canvas id="canvas" width="200" height="200"></canvas> | |
| <script> | |
| const canvas = document.getElementById("canvas"); | |
| const ctx = canvas.getContext("2d"); | |
| const width = canvas.width; | |
| const height = canvas.height; | |
| ctx.fillStyle = "green"; | |
| ctx.fillRect(0, 0, width / 2, height / 2); | |
| </script> | |
| </body> |