js文档高度位置相关值获取

ps:前言-最近再研究上拉加载与下拉刷新，涉及到文档高、可视区高等。。

本人测试ie,FF,chrome用document.documentElement.clientHeight都能取得高度和jquery 中的$(window).height();一样的值

文档的高度

document.body.clientHeight||document.documentElement.clientHeight,

文档滚动条位置

document.body.scrollTop||document.documentElement.scrollTop

但没有定义W3C标准会有问题

var dd = document.body || document.documentElement;
var h1 = Math.max(dd.clientHeight,db.clientHeight);var h2 = Math.max(dd.scrollHeight,db.scrollHeight);var objH = Math.max(h1,h2);

===============测试总结==================

has w3c

chrome:

1. document文档高度

($(document).height())==document.body.clientHeight;
document.documentElement.scrollHeight==document.body.scrollHeight

2. 可视高度

($(window).height())==document.documentElement.clientHeight;
scrollTop==document.body.scrollTop

firefox:

1. document文档高度==document.body.clientHeight;

document.documentElement.scrollHeight==document.body.scrollHeight

2. 可视高度==document.documentElement.clientHeight;

scrollTop==document.documentElement.scrollTop;

ie:

1. document文档高度==document.body.clientHeight;

document.documentElement.scrollHeight==document.body.scrollHeight

2. 可视高度==document.documentElement.clientHeight;

scrollTop==document.documentElement.scrollTop;

no w3c

chrome:

1. document文档高度($(document).height())!=document.body.clientHeight;

document文档高度==document.documentElement.clientHeight;
document.documentElement.scrollHeight==document.body.scrollHeight

2. 可视高度($(window).height())==document.documentElement.clientHeight;等于文档高度

可视高度为document.body.clientHeight;
scrollTop==document.body.scrollTop

firefox:
document文档高度($(document).height())!=document.body.clientHeight;

document文档高度==document.documentElement.clientHeight;
document.documentElement.scrollHeight==document.body.scrollHeight
可视高度($(window).height())==document.documentElement.clientHeight;等于文档高度
可视高度为document.body.clientHeight;
scrollTop==document.body.scrollTop

ie

document文档高度==document.body.scrollHeight;
可视高度==document.body.clientHeight;
document.documentElement.scrollHeight
document.documentElement.clientHeight==0
scrollTop==document.body.scrollTop

has w3c兼容

文档高(推荐scrollHeight,document.body.clientHeight || document.documentElement.clientHeight;)
--------------------------------------兼容ie firefox chrome--------------------------------
****文档高

document.documentElement.scrollHeight||document.body.scrollHeight;(注意)

可视高

document.documentElement.clientHeight || document.body.clientHeight

scrollTop==document.documentElement.scrollTop||document.body.scrollTop;```
-------------------------------------------------------------------------------------------
####no w3c兼容

文档高document.documentElement.clientHeight || document.body.scrollHeight;
可视高document.body.clientHeight
scrollTop==document.documentElement.scrollTop||document.body.scrollTop;