ClearRect error

Question

How do I make the previously drawn object in the canvas to get deleted? Even if I use clearRect, it still shows when I draw again
https://code.sololearn.com/Wu6oB61QkUYF/?ref=app

Answer 1

add
ctx.beginPath();
After clearRect(0,0,can.width,can.height);

Answer 2

Thank you so much. It actually worked.