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

order	title
3	[{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.

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;

.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;
}