ant-design/components/select/demo/size.md

---
order: 3
title:
  zh-CN: 三种大小
  en-US: Sizes
---

## zh-CN

三种大小的选择框，当 size 分别为 `large` 和 `small` 时，输入框高度为 `40px` 和 `24px` ，默认高度为 `32px`。

## en-US

The height of the input field for the select defaults to 32px. If size is set to large, the height will be 40px, and if set to small, 24px.

```tsx
import type { RadioChangeEvent } from 'antd';
import { Radio, Select } from 'antd';
import type { SizeType } from 'antd/es/config-provider/SizeContext';
import React, { useState } from 'react';

const { Option } = Select;

const children: React.ReactNode[] = [];
for (let i = 10; i < 36; i++) {
  children.push(<Option key={i.toString(36) + i}>{i.toString(36) + i}</Option>);
}

const handleChange = (value: string | string[]) => {
  console.log(`Selected: ${value}`);
};

const App: React.FC = () => {
  const [size, setSize] = useState<SizeType>('middle');

  const handleSizeChange = (e: RadioChangeEvent) => {
    setSize(e.target.value);
  };

  return (
    <>
      <Radio.Group value={size} onChange={handleSizeChange}>
        <Radio.Button value="large">Large</Radio.Button>
        <Radio.Button value="default">Default</Radio.Button>
        <Radio.Button value="small">Small</Radio.Button>
      </Radio.Group>
      <br />
      <br />
      <Select size={size} defaultValue="a1" onChange={handleChange} style={{ width: 200 }}>
        {children}
      </Select>
      <br />
      <Select
        mode="multiple"
        size={size}
        placeholder="Please select"
        defaultValue={['a10', 'c12']}
        onChange={handleChange}
        style={{ width: '100%' }}
      >
        {children}
      </Select>
      <br />
      <Select
        mode="tags"
        size={size}
        placeholder="Please select"
        defaultValue={['a10', 'c12']}
        onChange={handleChange}
        style={{ width: '100%' }}
      >
        {children}
      </Select>
    </>
  );
};

export default App;
```

```css
.code-box-demo .ant-select {
  margin: 0 8px 10px 0;
}

.ant-row-rtl .code-box-demo .ant-select {
  margin: 0 0 10px 8px;
}

#components-select-demo-search-box .code-box-demo .ant-select {
  margin: 0;
}
```