| <!DOCTYPE html> | |
| <html> | |
| <body> | |
| <canvas id ="output" width="300" height="400"></canvas> | |
| <script> | |
| var canvas = document.getElementById('output'); | |
| var ctx = canvas.getContext('2d'); | |
| ctx.beginPath(); | |
| ctx.roundRect(10, 10, 100, 100, [20]); | |
| ctx.fill(); | |
| </script> | |
| </body> | |
| </html> | |