ant-design-vue/components/time-picker/demo/value.md

<cn>
#### 受控组件
value 和 onChange 需要配合使用。也可以直接使用v-model。
</cn>

<us>
#### Under Control
`value` and `@change` should be used together or use v-model.
</us>

```tpl
<template>
  <div>
    <p>use value and @change</p>
    <a-time-picker @change="onChange" :value="value" />
    <br />
    <br />
    <p>v-model</p>
    <a-time-picker v-model="value" />
    <br />
    <br />
    <p>Do not change</p>
    <a-time-picker :value="value2" />
  </div>
</template>
<script>
  import moment from 'moment';
  export default {
    data() {
      return {
        value: null,
        value2: moment(),
      };
    },
    methods: {
      onChange(time) {
        console.log(time);
        this.value = time;
      },
    },
  };
</script>
```