paint2d-rects-ref.html (395B)
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>