html5-canvas/arc.html at master · TheImplementer/html5-canvas · GitHub

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<!doctype html>
<html lang="en">
    <head>
        <meta charset="UTF-8" />
        <title>HTML5 Canvas template</title>
        <script type="text/javascript" src="js/jquery-2.0.3.min.js"></script>
        <script type="text/javascript">
        $(document).ready(function() {
            var canvas = document.getElementById('myCanvas');
            var ctx = canvas.getContext('2d');
            ctx.fillStyle = '#000000';
            ctx.fillRect(0, 0, 500, 500);

            ctx.beginPath();
            ctx.strokeStyle = '#0000ff';
            ctx.lineWidth = 5;
            ctx.arc(250, 250, 80, (Math.PI/180)*0, (Math.PI/180)*360, false);
            ctx.stroke();
            ctx.closePath();

            ctx.beginPath();
            ctx.strokeStyle = '#ff0000';
            ctx.lineWidth = 5;
            ctx.arc(250, 250, 40, (Math.PI/180)*0, (Math.PI/180)*270, false);
            ctx.stroke();
            ctx.closePath();

            ctx.beginPath();
            ctx.strokeStyle = '#00ff00';
            ctx.lineWidth = 5;
            ctx.arc(250, 250, 120, (Math.PI/180)*0, (Math.PI/180)*270, true);
            ctx.stroke();
            ctx.closePath();
        });
        </script>
    </head>
    <body>
        <div style="position: absolute; top: 50px; left: 50px;">
            <canvas id="myCanvas" width="500" height="500">
            Your browser does not support HTML5 canvas.
            </canvas>
        </div>
    </body>
</html>