title: Pass a Class to props in Vuejs
body: <p>I am new to vue. I recently need to pass a class as a props to a component. As below:</p>
  
  <pre><code>&lt;my-component v-for="(name, index) in　Names" :key="'name-' + index " :person="new Person(name)"&gt;&lt;/my-component&gt;
  </code></pre>
  
  <p>Person as below:</p>
  
  <pre><code>class Person {
   constructor(name) {
     this.name = name
   }
  }
  </code></pre>
  
  <p>Names are data from server.
  The problem is when I update the name using <code>this.$props.person.name = 'Ken'</code>, it
  does not change. I look into the <code>$props.person</code>, it missed <code>__ob__: Observer</code>.
  Please help!!!</p>