Vue.component('todo-item',{
  props:['grocery'],
  template:'<li>{{grocery.text}}</li>'
})
var app7 = new Vue({
  el:"#app7",
  data:{
    groceryList:[
      {"id":0,"text":"蔬菜"},
      {"id":1,"text":"奶酪"},
      {"id":2,"text":"其他"}
    ]
  }
})

<div id="app7">
  <ol>
    <todo-item
      v-for="grocery in groceryList"
      v-bind:grocery="grocery"
      v-bind:key="grocery.id">
    </todo-item>
  </ol>
</div>

var Child = {
 template: '<div>A custom component!</div>'
}
new Vue({
 // ...
 components: {
  // <my-component> 将只在父模板可用
  'my-component': Child
 }
})

<table>
 <my-row>...</my-row>
</table>

<table>
 <tr is="my-row"></tr>
</table>

<div id="example-2">
 <simple-counter></simple-counter>
 <simple-counter></simple-counter>
 <simple-counter></simple-counter>
</div>

var data = { counter: 0 }
Vue.component('simple-counter', {
 template: '<button v-on:click="counter += 1">{{ counter }}</button>',
 data: function () {
  return data
 }
})
new Vue({
 el: '#example-2'
})

Vue.component('simple-counter', {
 template: '<button v-on:click="counter += 1">{{ counter }}</button>',
 data: function () {
  return {counter:0}
 }
})
new Vue({
 el: '#example-2'
})