Let’s discuss your “Simon Game"

Code Feedback
1

Hello everyone
I’m currently finishing my Front End Projects, but unfortunately got stuck with some issues in my “Simon”.
Basically:

  • sound loop bug
    I noticed that when I click quickly start button twice, the sound starts looping, and I can’t find why. It’s the play() function’s loop going on, but I can’t prevent it.

  • graphical bug
    Silly thing, but I can’t get rid of annoying lines of underneath colors visible in my game, near the horizontal and vertical lines. Tried different solutions, but it always looks like this

  • quality code
    I can see that my code is a spaghetti. I know basics of Functional and OO programming, but can’t implement them. How can I start?

here’s my Pen: