| <svg style="display: block; width: 0; height: 0"> |
| <defs> |
| <filter id="floodFilter"> |
| <feFlood x="0" y="0" width="100" height="100" flood-color="rgb(255,0,0)"/> |
| </filter> |
| </defs> |
| </svg> |
| <canvas id="canvas" width="100" height="100"></canvas> |
| <script> |
| var canvas = document.getElementById('canvas'); |
| var ctx = canvas.getContext('2d'); |
| var feFlood = document.getElementById("floodFilter").firstElementChild; |
| ctx.filter = 'url(#floodFilter)'; |
| feFlood.setAttribute("flood-color", "rgb(0,255,0)"); |
| ctx.filter = 'url(#floodFilter)'; |
| ctx.fillRect(10, 10, 10, 10); |
| </script> |