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HTML

              
                <!DOCTYPE html>
<html lang="ja">
<head>
  <meta charset="utf-8">
  <title>Vue.js App</title>
  <link href="main.css" rel="stylesheet">
</head>
<body>
  <div id="app">
    <!-- 1 オブジェクトのプロパティを表示 -->
<p>{{ message.value }}</p>
<!-- 2 文字列の長さを表示 -->
<p>{{ message.value.length }}</p>
<!-- 3 リストのインデックス2を表示 -->
<p>{{ list[2] }}</p>
<!-- 4 プロパティを組み合わせて使用 -->
<p>{{ list[num] }}</p>
    <input type="text" :value="message.value">
  </div>
  <script src="https://cdn.jsdelivr.net/npm/vue@2.5.16/dist/vue.js"></script>
  <script src="main.js"></script>
</body>
</html>
              
            
!

CSS

              
                
              
            
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JS

              
                // テキストと属性のデータバインディング
new Vue({
  el: '#app',
  data: {
    // オブジェクトデータ
    message: {
      value: 'Hello Vue.js!'
    },
    // 配列データ 3 と 4 で使用
    list: ['りんご', 'ばなな', 'いちご'],
    // 別のデータを使用してlistから取り出す要素を動的に 4 で使用
    num: 1
  }
})
              
            
!
999px

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