Vuejs 使用官网上面的例子

Question

1.使用vuejs 官网上面的例子，在控制台中发现了错误了，

VM2369 vue.js:2658 [Vue warn]: Unknown custom element: <todo-item> - did you register the component correctly? For recursive components, make sure to provide the "name" option.
(found in root instance)

2.源码：

<div id="app-7">
  <ol>
    <!-- Now we provide each todo-item with the todo object    -->
    <!-- it's representing, so that its content can be dynamic -->
    <todo-item v-for="item in groceryList" v-bind:todo="item"></todo-item>
  </ol>
</div>

Vue.component('todo-item', {
  props: ['todo'],
  template: '<li>{{ todo.text }}</li>'
})
var app7 = new Vue({
  el: '#app-7',
  data: {
    groceryList: [
      { text: 'Vegetables' },
      { text: 'Cheese' },
      { text: 'Whatever else humans are supposed to eat' }
    ]
  }
})

Answer 1

https://jsfiddle.net/ruqroa9q/
没问题啊

Answer 2

楼主应该是写反了，需要先注册组件，然后新建Vue