function startButton() {
  var startButton = document.getElementById('start');
  startButton.style.display = 'none';
  isStartVisible = false;
}
// Clicking a button is needed to authorize the browser to play sounds.  :(
Clicking a button is needed to authorize the browser to play sounds.
Clicking a button is needed to authorize the browser to play sounds .
function startButton() {
  var startButton = document.getElementById('start');
  startButton.style.display = 'none';
  isStartVisible = false;
}
function startButton ( ) { var startButton = document . getElementById ( 'start' ) ; startButton . style . display = 'none' ; isStartVisible = false ; }
Clicking a button is needed to authorize the browser to play sounds.
Clicking a button is needed to authorize the browser to play sounds .