# Elevator

### Intro

It is used to quickly locate the list and display the index

### Install

```tsx
import { Elevator } from '@nutui/nutui-react-native';
```

## Demo

### Basic Usage

:::demo

```tsx
import React from 'react'
import { Elevator } from '@nutui/nutui-react-native'

const App = () => {
  const dataList = [
    {
      title: 'A',
      list: [
        {
          name: 'AnHui',
          id: 1,
        },
      ],
    },
    {
      title: 'B',
      list: [
        {
          name: 'BeiJing',
          id: 2,
        },
      ],
    },
    {
      title: 'G',
      list: [
        {
          name: 'GuangXi',
          id: 3,
        },
        {
          name: 'GuangDong',
          id: 4,
        },
      ],
    },
    {
      title: 'H',
      list: [
        {
          name: 'HuNan',
          id: 5,
        },
        {
          name: 'HuBei',
          id: 6,
        },
        {
          name: 'Henan',
          id: 7,
        },
      ],
    },
  ]
  const onClickItem = (key: string, item: any) => {
    console.log(key, JSON.stringify(item))
  }

  const onClickIndex = (key: string) => {
    console.log(key)
  }
  return (
    <Elevator
      indexList={dataList}
      height="260"
      onClickItem={(key: string, item: any) => onClickItem(key, item)}
      onClickIndex={(key: string) => onClickIndex(key)}
    />
  )
}
export default App;
```

:::

### Custom index

:::demo

```tsx
import React from 'react'
import { Elevator } from '@nutui/nutui-react-native'

const App = () => {
  const dataList = [
    {
      num: 'One',
      list: [
        {
          name: 'BeiJing',
          id: 1,
        },
        {
          name: 'ShangHai',
          id: 2,
        },
        {
          name: 'ShenZhen',
          id: 3,
        },
        {
          name: 'GuangZhou',
          id: 4,
        },
        {
          name: 'HangZhou',
          id: 5,
        },
      ],
    },
    {
      num: 'Two',
      list: [
        {
          name: 'ChengDu',
          id: 6,
        },
        {
          name: 'XiAn',
          id: 7,
        },
        {
          name: 'TianJin',
          id: 8,
        },
        {
          name: 'WuHan',
          id: 9,
        },
        {
          name: 'ChangSha',
          id: 10,
        },
        {
          name: 'ChongQin',
          id: 11,
        },
        {
          name: 'SuZhou',
          id: 12,
        },
        {
          name: 'NanJing',
          id: 13,
        },
      ],
    },
    {
      num: 'Three',
      list: [
        {
          name: 'XiNing',
          id: 14,
        },
        {
          name: 'LanZhou',
          id: 15,
        },
        {
          name: 'ShiJiaZhuang',
          id: 16,
        },
        {
          name: 'QinHuangDao',
          id: 17,
        },
        {
          name: 'DaLian',
          id: 18,
        },
        {
          name: 'HaErBin',
          id: 19,
        },
        {
          name: 'ChangChun',
          id: 20,
        },
        {
          name: 'TaiYuan',
          id: 21,
        },
      ],
    },
  ]
  const onClickItem = (key: string, item: any) => {
    console.log(key, JSON.stringify(item))
  }

  const onClickIndex = (key: string) => {
    console.log(key)
  }
  return (
    <Elevator
      indexList={dataList}
      height="220"
      acceptKey="num"
      onClickItem={(key: string, item: any) => onClickItem(key, item)}
      onClickIndex={(key: string) => onClickIndex(key)}
    />
  )
}
export default App;
```

:::

### Index ceiling

:::demo

```tsx
import React from 'react'
import { Elevator } from '@nutui/nutui-react-native'

const App = () => {
  const dataList = [
    {
      title: 'A',
      list: [
        {
          name: 'AnHui',
          id: 1,
        },
      ],
    },
    {
      title: 'B',
      list: [
        {
          name: 'BeiJing',
          id: 2,
        },
      ],
    },
    {
      title: 'C',
      list: [
        {
          name: 'ChongQin',
          id: 3,
        },
      ],
    },
    {
      title: 'F',
      list: [
        {
          name: 'FuJian',
          id: 4,
        },
      ],
    },
    {
      title: 'G',
      list: [
        {
          name: 'GuangXi',
          id: 5,
        },
        {
          name: 'GuangDong',
          id: 6,
        },
        {
          name: 'GanSu',
          id: 7,
        },
        {
          name: 'GuiZhou',
          id: 8,
        },
      ],
    },
    {
      title: 'H',
      list: [
        {
          name: 'HuNan',
          id: 9,
        },
        {
          name: 'HuBei',
          id: 10,
        },
        {
          name: 'HaiNan',
          id: 11,
        },
        {
          name: 'HeBei',
          id: 12,
        },
        {
          name: 'HeNan',
          id: 13,
        },
        {
          name: 'HeiLongJiang',
          id: 14,
        },
      ],
    },
    {
      title: 'J',
      list: [
        {
          name: 'JiLin',
          id: 15,
        },
        {
          name: 'JiangSu',
          id: 16,
        },
        {
          name: 'JiangXi',
          id: 17,
        },
      ],
    },
    {
      title: 'L',
      list: [
        {
          name: 'LiaoNing',
          id: 18,
        },
      ],
    },
  ]
  const onClickItem = (key: string, item: any) => {
    console.log(key, JSON.stringify(item))
  }

  const onClickIndex = (key: string) => {
    console.log(key)
  }
  return (
    <Elevator
      indexList={dataList}
      height="220"
      isSticky
      onClickItem={(key: string, item: any) => onClickItem(key, item)}
      onClickIndex={(key: string) => onClickIndex(key)}
    />
  )
}
export default App;
```

:::

### Custom Content

:::demo

```tsx
import React from 'react'
import { Elevator, elevatorContext, Icon } from '@nutui/nutui-react-native'

const App = () => {
  const dataList = [
    {
      title: 'A',
      list: [
        {
          name: 'AnHui',
          id: 1,
        },
      ],
    },
    {
      title: 'B',
      list: [
        {
          name: 'BeiJing',
          id: 2,
        },
      ],
    },
    {
      title: 'G',
      list: [
        {
          name: 'GuangXi',
          id: 3,
        },
        {
          name: 'GuangDong',
          id: 4,
        },
      ],
    },
    {
      title: 'H',
      list: [
        {
          name: 'HuNan',
          id: 5,
        },
        {
          name: 'HuBei',
          id: 6,
        },
        {
          name: 'Henan',
          id: 7,
        },
      ],
    },
  ]
  const onClickItem = (key: string, item: any) => {
    console.log(key, JSON.stringify(item))
  }

  const onClickIndex = (key: string) => {
    console.log(key)
  }
  return (
    <Elevator
      indexList={dataList}
      height="260"
      onClickItem={(key: string, item: any) => onClickItem(key, item)}
      onClickIndex={(key: string) => onClickIndex(key)}
    >
      <elevatorContext.Consumer>
        {(value) => {
          return (
            <>
              <Icon name="JD" size="12" />
              <span style={{ marginLeft: '15px' }}>{value?.name}</span>
            </>
          )
        }}
      </elevatorContext.Consumer>
    </Elevator>
  )
}
export default App;
```

:::

## API

### Props

| Attribute   | Description                               | Type                                                        | Default               |
| ----------- | ----------------------------------------- | ----------------------------------------------------------- | --------------------- |
| height      | Height of elevator area                   | Number                                                      | `200`                 |
| acceptKey   | Index key value                           | String                                                      | `title`               |
| indexList   | Index list                                | Array（`item` needs to contain `id` and `name` attributes） | `[{id: 0, name: ''}]` |
| isSticky    | Whether the index is ceiling              | Boolean                                                     | `false`               |
| spaceHeight | Up and down spacing of right anchor point | Number                                                      | `23`                  |
| titleHeight | Height of left index                      | Number                                                      | `35`                  |

### Event

| Event        | Description   | Arguments                              |
| ------------ | ------------- | -------------------------------------- |
| onClickItem  | Click content | key: string, item: { id: 0, name: '' } |
| onClickIndex | Click index   | key: string                            |