ant-design/components/date-picker/demo/format.tsx

import React from 'react';
import type { DatePickerProps } from 'antd';
import { DatePicker, Space } from 'antd';
import dayjs from 'dayjs';
import customParseFormat from 'dayjs/plugin/customParseFormat';

dayjs.extend(customParseFormat);

const { RangePicker } = DatePicker;

const dateFormat = 'YYYY/MM/DD';
const weekFormat = 'MM/DD';
const monthFormat = 'YYYY/MM';

/** Manually entering any of the following formats will perform date parsing */
const dateFormatList = ['DD/MM/YYYY', 'DD/MM/YY', 'DD-MM-YYYY', 'DD-MM-YY'];

const customFormat: DatePickerProps['format'] = (value) =>
  `custom format: ${value.format(dateFormat)}`;

const customWeekStartEndFormat: DatePickerProps['format'] = (value) =>
  `${dayjs(value).startOf('week').format(weekFormat)} ~ ${dayjs(value)
    .endOf('week')
    .format(weekFormat)}`;

const App: React.FC = () => (
  <Space direction="vertical" size={12}>
    <DatePicker defaultValue={dayjs('2015/01/01', dateFormat)} format={dateFormat} />
    <DatePicker defaultValue={dayjs('01/01/2015', dateFormatList[0])} format={dateFormatList} />
    <DatePicker defaultValue={dayjs('2015/01', monthFormat)} format={monthFormat} picker="month" />
    <DatePicker defaultValue={dayjs()} format={customWeekStartEndFormat} picker="week" />
    <RangePicker
      defaultValue={[dayjs('2015/01/01', dateFormat), dayjs('2015/01/01', dateFormat)]}
      format={dateFormat}
    />
    <DatePicker defaultValue={dayjs('2015/01/01', dateFormat)} format={customFormat} />
  </Space>
);

export default App;