ant-design/components/popover/demo/placement.md

order	title
1	位置

位置有十二个方向。

import { Popover, Button } from 'antd';

const text = <span>标题</span>;
const content = (
   <div>
     <p>内容</p>
     <p>内容</p>
   </div>
);

ReactDOM.render(
  <div>
    <div style={{ marginLeft: 60 }}>
      <Popover placement="topLeft" title={text} overlay={content} trigger="click">
        <Button>上左</Button>
      </Popover>
      <Popover placement="top" title={text} overlay={content} trigger="click">
        <Button>上边</Button>
      </Popover>
      <Popover placement="topRight" title={text} overlay={content} trigger="click">
        <Button>上右</Button>
      </Popover>
    </div>
    <div style={{ width: 60, float: 'left' }}>
      <Popover placement="leftTop" title={text} overlay={content} trigger="click">
        <Button>左上</Button>
      </Popover>
      <Popover placement="left" title={text} overlay={content} trigger="click">
        <Button>左边</Button>
      </Popover>
      <Popover placement="leftBottom" title={text} overlay={content} trigger="click">
        <Button>左下</Button>
      </Popover>
    </div>
    <div style={{ width: 60, marginLeft: 270 }}>
      <Popover placement="rightTop" title={text} overlay={content} trigger="click">
        <Button>右上</Button>
      </Popover>
      <Popover placement="right" title={text} overlay={content} trigger="click">
        <Button>右边</Button>
      </Popover>
      <Popover placement="rightBottom" title={text} overlay={content} trigger="click">
        <Button>右下</Button>
      </Popover>
    </div>
    <div style={{ marginLeft: 60, clear: 'both' }}>
      <Popover placement="bottomLeft" title={text} overlay={content} trigger="click">
        <Button>下左</Button>
      </Popover>
      <Popover placement="bottom" title={text} overlay={content} trigger="click">
        <Button>下边</Button>
      </Popover>
      <Popover placement="bottomRight" title={text} overlay={content} trigger="click">
        <Button>下右</Button>
      </Popover>
    </div>
  </div>
, mountNode);