| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| </head> | |
| <body> | |
| <canvas id="canvas" width="400" height="400"></canvas> | |
| <script> | |
| async function start() { | |
| const canvas = document.getElementById("canvas"); | |
| const context = canvas.getContext("2d"); | |
| context.fillStyle = "blue"; | |
| context.fillRect(0, 0, 400, 400); | |
| context.fillStyle = "white"; | |
| context.fillRect(100, 100, 200, 200); | |
| } | |
| window.addEventListener("load", start); | |
| </script> | |
| </body> | |
| </html> |