1758968-1-ref.html (361B)
1 <div style="width: 100px; height: 100px;"><canvas id="canvas" width="100" height="50"></canvas></div> 2 <script> 3 var can = document.getElementById('canvas'); 4 var ctx = can.getContext('2d'); 5 6 ctx.shadowOffsetX = 24; 7 ctx.shadowOffsetY = 24; 8 ctx.shadowColor = 'blue'; 9 ctx.shadowBlur = 20; 10 11 ctx.fillStyle = 'black'; 12 ctx.fillRect(0,0,40,40); 13 </script>