| <!doctype html> | |
| <canvas id='c'></canvas> | |
| <script> | |
| const canvas = document.getElementById('c'), | |
| ctx = c.getContext('2d', {alpha: false}); | |
| // The following would permanently damage the canvas (crbug.com/532148) | |
| canvas.height = null; | |
| ctx.fillRect( 0, 0, 128, null ); | |
| // Try to use canvas normally | |
| canvas.width = 128; | |
| canvas.height = 128; | |
| ctx.fillStyle = 'green'; | |
| ctx.fillRect( 0, 0, 128, 128 ); | |
| ctx.fillStyle = 'blue'; | |
| ctx.fillRect( 0, 0, 64, 64 ); | |
| ctx.fillRect( 64, 64, 64, 64 ); | |
| </script> |