#myCanvas
bezierCurveTo
20,100,200,100,200,20|50,100,200,100,200,20|100,100,200,100,200,20|200,100,200,100,200,20|500,100,200,100,200,20|-100,100,200,100,200,20|-200,100,200,100,200,20
400
ctx.beginPath();
ctx.moveTo(20,20);
ctx.bezierCurveTo(#val);
ctx.stroke();