useHover and useHoverDirty

React 用户界面传感器钩子，用于追踪某个元素是否有鼠标悬停。

• useHover 接收一个 React 元素或者返回一个元素的函数，useHoverDirty 接收 React ref。
• useHover 设置 react onMouseEnter 和 onMouseLeave 事件, useHoverDirty 设置 DOM onmouseover 和 onmouseout 事件.

用法

import {useHover} from 'react-use';
const Demo = () => {
  const element = (hovered) =>
    <div>
      Hover me! {hovered && 'Thanks!'}
    </div>;
  const [hoverable, hovered] = useHover(element);
  return (
    <div>
      {hoverable}
      <div>{hovered ? 'HOVERED' : ''}</div>
    </div>
  );
};

参考

const [newReactElement, isHovering] = useHover(reactElement);
const [newReactElement, isHovering] = useHover((isHovering) => reactElement);
const isHovering = useHoverDirty(ref);