/*
 * @Author: your name
 * @Date: 2021-04-06 11:41:52
 * @LastEditTime: 2021-04-06 11:41:59
 * @LastEditors: Please set LastEditors
 * @Description: In User Settings Edit
 * @FilePath: \aiguo_erp_vue\src\utils\screen.js
 */
//滚动条在Y轴上的滚动距离
export function getScrollTop(){
    var scrollTop = 0, bodyScrollTop = 0, documentScrollTop = 0;
    if(document.body){
      bodyScrollTop = document.body.scrollTop;
    }
    if(document.documentElement){
      documentScrollTop = document.documentElement.scrollTop;
    }
    scrollTop = (bodyScrollTop - documentScrollTop > 0) ? bodyScrollTop : documentScrollTop;
    return scrollTop;
  }
  
  
  
  //文档的总高度
  export function getScrollHeight(){
    var scrollHeight = 0, bodyScrollHeight = 0, documentScrollHeight = 0;
    if(document.body){
      bodyScrollHeight = document.body.scrollHeight;
    }
    if(document.documentElement){
      documentScrollHeight = document.documentElement.scrollHeight;
    }
    scrollHeight = (bodyScrollHeight - documentScrollHeight > 0) ? bodyScrollHeight : documentScrollHeight;
    return scrollHeight;
  }
  
  
  
  //浏览器视口的高度
  export function getWindowHeight(){
    var windowHeight = 0;
    if(document.compatMode == "CSS1Compat"){
      windowHeight = document.documentElement.clientHeight;
    }else{
      windowHeight = document.body.clientHeight;
    }
    return windowHeight;
  }