File: //usr/share/doc/libjs-excanvas/examples/testcases/quadraticcurve.html
<!DOCTYPE html>
<html>
<head>
<title>Quadratic Curve Test</title>
<style>
body {
text-align: center
}
</style>
<!--[if IE]><script type="text/javascript" src="../excanvas.js"></script><![endif]-->
<script>
window.onload = function() {
var ctx = document.getElementById('c').getContext('2d');
ctx.save();
ctx.strokeStyle = 'black';
ctx.lineWidth = 1;
ctx.beginPath();
ctx.moveTo(50, 50);
ctx.quadraticCurveTo(0, 0, 25, 75);
ctx.quadraticCurveTo(50, 0, 50, 50);
ctx.stroke();
ctx.restore();
// Same with some scaling
ctx.save();
ctx.translate(-56, -24);
ctx.scale(3.5, 1.5);
ctx.strokeStyle = '#ddd';
ctx.lineWidth = 1;
ctx.beginPath();
ctx.moveTo(50, 50);
ctx.quadraticCurveTo(0, 0, 25, 75);
ctx.quadraticCurveTo(50, 0, 50, 50);
ctx.stroke();
ctx.restore();
};
</script>
</head>
<body>
<canvas id=c width=200 height=200></canvas>
<p>This tests that drawing quadratic curves work in the same way in different
browsers.</p>
</body>
</html>