获取浏览器窗口可视范围的高度
getClientHeight(){
let clientHeight=0
if(document.body.clientHeight&&document.documentElement.clientHeight){
clientHeight = (document.body.clientHeight<document.documentElement.clientHeight)?document.body.clientHeight:document.documentElement.clientHeight
}
else{
clientHeight = (document.body.clientHeight>document.documentElement.clientHeight)?document.body.clientHeight:document.documentElement.clientHeight
}
return clientHeight
},
获取浏览器窗口滚动条滚动高度
getScrollTop(){
let scrollTop=0;
if(document.documentElement&&document.documentElement.scrollTop){
scrollTop=document.documentElement.scrollTop;
}else if(document.body){
scrollTop=document.body.scrollTop;
}
return scrollTop;
}