Play Spot the Difference Online - Free HTML Game - 常规

<!DOCTYPE html>
<html>
<head>
  <title>Spot the Difference Game - Free Online</title>
</head>
<body>
<div>
  <h1>Spot the Difference Game</h1>
  <img src="https://images.unsplash.com/photo-1499084732479-de2c02d45fcc?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=1050&q=80" alt="Picture One" width=500px>
  <img src="https://images.unsplash.com/photo-1499084732479-de2c02d45fcc?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=1050&q=80" alt="Picture Two" width=500px>
</div>
<script type="text/javascript">
let score = 0;

function checkAnswer(){
  let answer = prompt("What is the difference between the two pictures?");
  if(answer == 'The second picture has a yellow bird in the top right corner'){
    score ++;
    alert("Correct! You scored " + score);
  } else {
    alert("Incorrect! You scored " + score);
  }
}

checkAnswer();

</script>
</body>
</html>