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1 <!DOCTYPE html> |
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2 <html> |
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3 <head> |
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4 <canvas id="canvas" width="100" height="100"></canvas> |
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5 |
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6 <script> |
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7 |
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8 var canvas = document.getElementById('canvas'); |
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9 var ctx = canvas.getContext('2d'); |
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10 |
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11 ctx.fillStyle = '#0f0'; |
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12 ctx.fillRect(0, 0, 100, 100); |
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13 |
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14 ctx.beginPath(); |
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15 ctx.rect(30, 30, 40, 40); |
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16 ctx.clip(); |
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17 |
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18 ctx.beginPath(); |
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19 ctx.arc(50, 50, 25, 0, 2 * Math.PI); |
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20 ctx.clip(); |
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21 |
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22 ctx.fillStyle = '#f00'; |
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23 |
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24 ctx.fillRect(0, 0, 100, 100); |
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25 |
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26 </script> |
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27 </body></html> |