#myCanvas
bezierCurveTo
20,100,200,100,200,20|20,150,200,100,200,20|20,200,200,100,200,20|20,300,200,100,200,20|20,500,200,100,200,20|20,-100,200,100,200,20|20,-200,200,100,200,20
ctx.beginPath();
ctx.moveTo(20,20);
ctx.bezierCurveTo(#val);
ctx.stroke();