Vue 内置属性
Vue 有一组内置属性。
| 属性 | 描述 |
|---|---|
| is | 引用当前活动动态组件 |
| key | 为使用 v-for 创建的元素提供唯一的值 |
| ref | 在模板中对元素进行引用，以便以后在脚本中操作该元素。 |
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