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<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width">
  <title>JS Bin</title>
</head>
<body>
  <div id="app">
  
    <!-- 方法2:物件 -->
    <div class="box" :class="objectClass">
      Object
    </div>
    
    <!-- 取物件裡,單個屬性 -->
    <button v-on:click="objectClass.rotate = !objectClass.rotate">
      rotate
    </button>
    <br><br>
    
    <!-- 注意,若有「-」字號,要用「中括號」方式寫法 -->
    <input type="checkbox" v-model="objectClass['bg-orange']">
      bg-orange
    </input>
      
  </div>
  
  
  
  <!-- development version, includes helpful console warnings -->
  <script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
</body>
</html>
 
new Vue({
  el: '#app',
  data: {
    objectClass: {
    'rotate': false,
    'bg-orange': false,
    },
  },
});
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anonymouspro
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