#myCanvas
font
'10px Arial'|'11px Arial'|'12px Arial'|'13px Arial'|'14px Arial'|'15px Arial'|'16px Arial'|'17px Arial'|'18px Arial'|'19px Arial'|'20px Arial'|'30px Arial'|'50px Arial'
=
ctx.font=#val;
ctx.fillText('Hello World',10,30);
Watch a demo of different values of the .