study06_condition.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
    <title>Document</title>
</head>
<body>
    <div id='app'>
        <div v-if="type === 'A'">
            A
          </div>
          <div v-else-if="type === 'B'">
            B
          </div>
          <div v-else-if="type === 'C'">
            C
          </div>
          <div v-else>
            Not A/B/C
          </div>

          <div v-show="ok">HELLO</div>
    </div>

    <script type="text/javascript">
        var vm = new Vue({
            el : '#app',
            data : {
                type :'D',
                ok : true,
            }
        });
    </script>
    
</body>
</html>