This article mainly introduces how to obtain the value of the scroll bar by encapsulating scroll.js. It has a certain reference value. Now I share it with you. Friends in need can refer to it.
function Obj(){}
Obj.prototype={
scroll:function(){
/*
主要是做兼容处理
这里必须时!=null 因为默认值和每次滚动的时侯 都可以值为0
但是 if(0)为假 所以就只要不为null 就执行
*/
if(window.pageYOffset!=null){
/*IE9 和其他标准浏览器*/
return {
left:window.pageXOffset,
top:window.pageYOffset
}
}
/*声明了<!DOCTYPE html> */
else if(document.compatMode=="CSS1Compat")
{
return{
left:document.documentElement.scrollLeft,
top:document.documentElement.scrollTop
}
}
else{
return {
left:document.body.scrollLeft,
top:document.body.scrollTop
}
}
}
}var obj=new Obj();The above is The entire content of this article is hoped to be helpful to everyone's study. For more related content, please pay attention to the PHP Chinese website!
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