dotinstall_memory/index.html at master · abish/dotinstall_memory · GitHub

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<!DOCTYPE html>
<html lang="ja">
<head>
    <meta charset="utf-8">
    <title>memory</title>
    <style>
        input {
            font-size: 18px;
        }
    </style>
</head>
<body>
  <h1>神経衰弱</h1>
  <p>time: <span id="time"></span></p>
  <h2>score: <span id="score"></span></h2>
  <div id='stage'></div>

<script>
    (function() {
  var cards = [],
      CARD_NUM = 16,
      currentNum,
      correctNum = 0,
      enableFlip = true,
      enableTimer = true,
      time = 0,
      score = 3,
      timerText,
      openedCard;

  function initCards() {
    var stage = document.getElementById('stage'),
      cardIndex,
      i,
      num;

      for (i = 0; i < CARD_NUM; i++) {
          num = Math.floor(i / 2);
          do {
              cardIndex = Math.floor(Math.random() * CARD_NUM);
          } while (typeof cards[cardIndex] !== 'undefined');
          cards[cardIndex] = createCard(num);
      }
      console.log(cards[0]);
      for (i = 0; i < CARD_NUM; i++) {
          stage.appendChild(cards[i]);
          if (i % Math.sqrt(CARD_NUM) == (Math.sqrt(CARD_NUM) - 1)) {
            stage.appendChild(document.createElement('br'));
          }
      }
  }


  function flip(card) {
      if (!enableFlip) {return;}
      if (card.value != '?') {return;}
      card.value = card.dataset.num;

      if (typeof currentNum === 'undefined') {
          openedCard = card;
          currentNum = card.dataset.num;
      } else {
          judge(card);
         currentNum = undefined;
      }
  }

  function judge(card) {
      if (currentNum == card.dataset.num) {
          correctNum++;
          score += 2;
          document.getElementById("score").innerHTML = score;
          if (correctNum == CARD_NUM / 2) {
              enableTimer = false;
              alert("your score is..."+ document.getElementById("score").innerHTML );
          }
      } else {
          score -= 0.2;
          enableFlip = false;
          setTimeout(function() {
              openedCard.value = '?';
              card.value = '?';
              enableFlip = true;
              }, 700);
      }
  }

  function runTimer() {
      if (!enableTimer) {return;}
      time++;
      score = Math.floor( (score -  0.001) * 1000 ) / 1000;

      if (score < 0) {
          enableTimer = false;
          alert("GameOver! your score is 0");

      }

      document.getElementById("score").innerHTML = score;
      document.getElementById("time").innerHTML = makeTimerText(time);

      setTimeout(function() {
          runTimer();
      },10);
  }

  function makeTimerText(milliSeconds) {
      var seconds = Math.floor(milliSeconds / 100);
      milliSeconds -= seconds * 100;
      return seconds + '.' + milliSeconds;

  }

  function createCard(num) {
    var card = document.createElement('input');
    card.type = 'button';
    card.value = '?';
    card.dataset.num = num;
    card.onclick = function() {
      flip(this);
    }
    return card;
  }

  initCards();
  runTimer();

})();

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