<cn>
#### 基本用法
最简单的用法。
</cn>

<us>
#### basic Usage
The most basic usage.
</us>

```vue
<template>
  <div>
    <a-switch default-checked @change="onChange" />
  </div>
</template>
<script>
export default {
  data() {
    return {};
  },
  methods: {
    onChange(checked) {
      console.log(`a-switch to ${checked}`);
    },
  },
};
</script>
```
