@txdfe/at/lib/affix/util.js

一个设计体系组件库

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.getNodeHeight = getNodeHeight;
exports.getRect = getRect;
exports.getScroll = getScroll;

function getScroll(node, isVertical) {
  if (typeof window === 'undefined') {
    return 0;
  }

  var windowProp = isVertical ? 'pageYOffset' : 'pageXOffset';
  var elementProp = isVertical ? 'scrollTop' : 'scrollLeft';
  return node === window ? node[windowProp] : node[elementProp];
}

function getRect(node) {
  return node !== window ? node.getBoundingClientRect() : {
    top: 0,
    left: 0,
    bottom: 0
  };
}

function getNodeHeight(node) {
  if (!node) {
    return 0;
  }

  if (node === window) {
    return window.innerHeight;
  }

  return node.clientHeight;
}