円を描こう
Sample04.html
<!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta charset="utf-8"/> <title>Sample04.html</title> <script> function draw() { var canvas = document.getElementById("canvas1"); var c = canvas.getContext("2d"); c.strokeStyle = "#ff9900"; c.beginPath(); c.arc(70, 70, 60, 0, Math.PI*2, false); c.stroke(); } </script> </head> <body onload="draw()"> <canvas id="canvas1" width="300" height="300"></canvas> </body> </html>
円の中を塗りつぶすにはこんな感じですか
Sample05.html
<!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta charset="utf-8"/> <title>Sample05.html</title> <script> function draw() { var canvas = document.getElementById("canvas1"); var c = canvas.getContext("2d"); c.fillStyle = "#990099"; c.beginPath(); c.arc(70, 70, 60, 0, Math.PI*2, false); c.fill(); } </script> </head> <body onload="draw()"> <canvas id="canvas1" width="300" height="300"></canvas> </body> </html>
IE9をインストールしたらIE8が使えなくて、不便(IE9に対応したページがすくないので)
しかたなくIE8に戻してみる