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HTML5 音声付き4択クイズを作ってみた

Posted at 2016-10-08

デモ：http://pie.karou.jp/zd.html

Web Speech APIで問題文を読んでもらいます

speechSynthesis.speak(new SpeechSynthesisUtterance("問題 1：　問題文"));

<!doctype html>
<html lang="ja">
<head>
<meta charset="utf-8">
<title>Javascriptでクイズ作成</title>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/2.1.4/jquery.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/underscore.js/1.8.3/underscore-min.js"></script>
<script>
var mondaibun = `
日本で2番目に面積の広い都道府県はどこでしょう,岩手県,a,b,c
日本で2番目に大きな湖はどこでしょう,霞ヶ浦,a,b,c
日本で2番目に長い川はどこでしょう,利根川,a,b,c
`;

var mondai = null;
var sound = [
   "folder3/seikai.mp3",
   "folder3/huseikai.mp3",
   "folder3/start.mp3"
];
sound = sound.map(function(v) {
   var audio = new Audio(v);
   audio.load();
   return audio;
});

function start() {
   $("#start").after('<p id="info"></p><div id="sentaku"></div><hr>');
   $("#start").remove();
   sound[2].play();
   mondai = mondaibun.trim().split("\n");
   setTimeout(function() {
      next();
   }, 200);
}

function next() {
   $("#sentaku").empty();
   if (mondai.length == 0) {
      $("#info").text("終わり");
      return;
   }
   var arr = mondai.shift().split(",");
   var str = arr.shift();
   speechSynthesis.speak(new SpeechSynthesisUtterance("問題。" + str));
   $("#info").text("問題 :" + str);
   var kotae = arr[0];
   arr = _.shuffle(arr);
   arr.forEach(function(v, i) {
      var flag = (kotae == v) ? true : false;
      var html = `<p>${i+1}: <input type="button" value="${v}" onclick="sentaku(${flag})"></p>`;
      $("#sentaku").append(html);
   });
}

function sentaku(x) {
   if (x == true) {
      speechSynthesis.cancel();
      sound[0].currentTime = 0;
      sound[0].play();
      setTimeout(function() {
         next();
      }, 800);
   } else {
      sound[1].currentTime = 0;
      sound[1].play();
   }
}
</script>
</head>
<body>
   <h1>Javascriptでクイズ作成</h1>
   <h3>Web Speech APIを利用したクイズです。 対応ブラウザ: Chrome</h3>
   <hr>
   <button id="start" onclick="start()">スタート</button>
</body>
</html>

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