<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>addevent</title> </head> <body style="height:9000px;"> <div style="position:fixed; top:0px; left:0px;"> <div id="test"></div> <div id="test2"></div> </div> <script> var $ = function(id){ return document.getElementById(id); } var addEvent = function(obj,event,fn){ if(obj.addEventListener){ obj.addEventListener(event,fn,false); }else if(obj.attachEvent){ obj.attachEvent("on"+event,fn); } } var scrollEvent = function(){ var screenHeight =document.documentElement.clientHeight||document.body.clientHeight; var scrollHeight = document.documentElement.scrollTop||document.body.scrollTop; $(‘test‘).innerHTML= "可视高度：" + screenHeight; $("test2").innerHTML= "滚动高度：" + scrollHeight; } addEvent(window,‘load‘,function(){ scrollEvent(); }); addEvent(window,‘scroll‘,function(){ scrollEvent(); }); addEvent(window,‘resize‘,function(){ scrollEvent(); }); </script> </body> </html>
addEventListener || attachEvent
原文：http://www.cnblogs.com/decsev/p/4053839.html