#myCanvas
quadraticCurveTo
350
20,100,200,20|50,100,200,20|100,100,200,20|200,100,200,20|500,100,200,20|-100,100,200,20|-500,100,200,20
ctx.beginPath();
ctx.moveTo(20,20);
ctx.quadraticCurveTo(#val);
ctx.stroke();
Watch a demo of different values of the .