#myCanvas
bezierCurveTo
20,100,200,100,200,20|20,100,100,100,200,20|20,100,0,100,200,20|20,100,-100,100,200,20|20,100,-300,100,200,20|20,100,300,100,200,20|20,100,500,100,200,20
ctx.beginPath();
ctx.moveTo(20,20);
ctx.bezierCurveTo(#val);
ctx.stroke();