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addEventListener || attachEvent
<!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
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