ant-design/components/button/demo/icon.md

order	title
1	zh-CN en-US 图标按钮 Icon

zh-CN

Button 内可以嵌套图标，图标可以放在文字前、后，也可以单独存在。

en-US

Button works fine with Icon, just set icon property or put Icon component in Button

import { Button, Icon } from 'antd';

ReactDOM.render(
  <div>
    <Button type="primary" shape="circle" icon="search" />
    <Button type="primary" icon="search">Button</Button>
    <br />
    <Button type="ghost" shape="circle-outline"><Icon type="search" /></Button>
    <Button type="ghost"><Icon type="search" />Button</Button>
  </div>,
  mountNode
);