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1 <!DOCTYPE html> | |
2 <html> | |
3 <body> | |
4 <canvas id ="output" width="100" height="100" style="background: blue;"></canvas > | |
5 <script> | |
6 var canvas = document.getElementById('output'); | |
7 var ctx = canvas.getContext('2d'); | |
8 | |
9 ctx.fillStyle = 'green'; | |
10 ctx.fillRect(0, 0, 100, 100); | |
11 | |
12 ctx.clearRect(40, 40, 20, 20); | |
13 | |
14 ctx.strokeStyle = 'red'; | |
15 ctx.lineWidth = 4; | |
16 ctx.strokeRect(20, 20, 60, 60); | |
17 </script> | |
18 </body> | |
19 </html> | |
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