I'm trying to animate a button when pressed using JS

I tried this:

function animatePress(currentColour){
    $("#" + currentColour).addClass("pressed");

    setTimeout(function() {
    $("#" + currentColour).removeClass("pressed");
    }, 100);
}

I also tried to assign userChosenColour(click by us on a button) to the animatePress parameter like this: var currentColour=userChosenColour; still nothing. It is a challenge game on udemy angela yu course, it's Simon game. I'm Using jQuery.