@reacted/use-popper

基于 popper.js 的 自定义 React hooks，方便用来显示弹层

API

// targetRef是用来定位的参考点，比如点击一个按钮
// placement, 位置规则
const { show, setShow, mountNode } = usePopper({
  targetRef,
  placement,
});

if (show) createPortal(<Popup />, mountNode);
return null;

targetRef

定位参考元素，可以是一个 htmlelement, 也可以是一个 virtualElment

virtualElement

type VirtualElement = {|
  getBoundingClientRect: () => ClientRect | DOMRect,
  contextElement?: Element,
|};

contextElement

contextElement is an optional property that describes the DOM context of the virtual element. This is necessary if getBoundingClientRect is derived from a real DOM element, and that element is within a different scrolling container context to the popper element.