18-Compilation-scope.html

<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta http-equiv="X-UA-Compatible" content="ie=edge">
  <title>Compilation scope</title>
  <script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.3.4/vue.js"></script>
  <style>
    #app {
      margin: 1em;
      font-size: 1.5em;
    }

    .parent,
    .child {
      margin: .5em;
      padding: .5em;
      font-size: 1.5em;
    }

    .parent {
      background-color: #f1f1f1;
    }

    .child {
      background-color: #333;
      color: #fff;
    }
  </style>
</head>

<body>

  <div id="app">
    <div class="parent">{{ msg }}</div>

    <!-- {{ msg }} in child not work -->
    <child>{{ msg }}</child>
  </div>


  <template id="child-template">
    <!-- ok -->
    <div class="child">{{ msg }}</div>
  </template>

  <script>
    // children component
    Vue.component('child', {
      template: '#child-template',
      data: function() {
        return {
          msg: 'I\'m child.'
        };
      }
    });

    // parent component
    var parent = new Vue({
      el: '#app',
      data: {
        msg: 'I\'m parent.'
      }
    });
  </script>


</body>

</html>