# 异步加载（单选）
异步单选的例子。
```html
<n-select
  v-model:value="value"
  filterable
  placeholder="搜索歌曲"
  :options="options"
  :loading="loading"
  clearable
  remote
  @search="handleSearch"
/>
```
```js
const options = [
  {
    label: 'Drive My Car',
    value: 'song1'
  },
  {
    label: 'Norwegian Wood',
    value: 'song2'
  },
  {
    label: 'You Won\'t See',
    value: 'song3'
  },
  {
    label: 'Nowhere Man',
    value: 'song4'
  },
  {
    label: 'Think For Yourself',
    value: 'song5'
  },
  {
    label: 'The Word',
    value: 'song6'
  },
  {
    label: 'Michelle',
    value: 'song7'
  },
  {
    label: 'What goes on',
    value: 'song8'
  },
  {
    label: 'Girl',
    value: 'song9'
  },
  {
    label: 'I\'m looking through you',
    value: 'song10'
  },
  {
    label: 'In My Life',
    value: 'song11'
  },
  {
    label: 'Wait',
    value: 'song12'
  }
]

export default {
  data () {
    return {
      value: null,
      loading: false,
      options: [],
      noDataContent: 'please search',
      handleSearch: (query) => {
        if (!query.length) {
          this.options = []
          this.noDataContent = 'please search'
          return
        }
        this.loading = true
        window.setTimeout(() => {
          this.options = options.filter(item => ~item.label.indexOf(query))
          if (!this.options.length) this.noDataContent = 'no result found'
          this.loading = false
        }, 1000)
      }
    }
  }
}
```
```css
.n-select {
  width: 180px;
  margin: 0 12px 8px 0;
}
```