Canvas rotate from bottom center image angle?

Question

How do you rotate an image with the canvas html5 element from the bottom center angle?

Answer 1

I have used this, when I needed to rotate texts started from their specified point (center)?

ctx.save(); 
ctx.translate(x,y);
ctx.rotate(degree*Math.PI/180);
ctx.translate(-x,-y);   
ctx.fillText(text,x,y); 
ctx.stroke();   
ctx.restore();