var buttonColours = ["red", "blue", "green", "yellow"];

var gamePattern = [];

function nextSequence() {

  var randomNumber = Math.floor(Math.random() * 4);
  var randomChosenColour = buttonColours[randomNumber];
  gamePattern.push(randomChosenColour);

  $("#" + randomChosenColour).fadeIn(100).fadeOut(100).fadeIn(100);

  var audio = new Audio("sounds/" + randomChosenColour + ".mp3");
  audio.play();
}

nextSequence();

play（）函数不起作用，它给出了错误“未捕获（promise中）DOMExc0019： play（）失败，因为用户没有首先与文档交互。”

建议一些修复。