ant-design/components/badge/demo/overflow.md

order	title
2	[{zh-CN 封顶数字} {en-US Overflow Count}]

zh-CN

超过 overflowCount 的会显示为 ${overflowCount}+，默认的 overflowCount 为 99。

en-US

${overflowCount}+ is displayed when count is larger than overflowCount. The default value of overflowCount is 99.

import { Badge } from 'antd';

ReactDOM.render(
  <div>
    <Badge count={99}>
      <a href="#" className="head-example" />
    </Badge>
    <Badge count={100}>
      <a href="#" className="head-example" />
    </Badge>
    <Badge count={99} overflowCount={10}>
      <a href="#" className="head-example" />
    </Badge>
    <Badge count={1000} overflowCount={999}>
      <a href="#" className="head-example" />
    </Badge>
  </div>,
  mountNode
);