Functions used by Javascript to obtain information such as the position of a scroll bar

In fact, this Code has already been introduced in the previous article "using Javascript to achieve smooth jump between Anchor". However, this article is specially published on this site because this requirement is frequently used, easy to view.
Copy codeThe Code is as follows:
<Script type = "text/javascript">
// Description: use Javascript to obtain information such as the position of the scroll bar.
// Source: ThickBox 2.1
Function getScroll ()
{
Var t, l, w, h;
If (document.doc umentElement & document.doc umentElement. scrollTop ){
T = document.doc umentElement. scrollTop;
L = document.doc umentElement. scrollLeft;
W = document.doc umentElement. scrollWidth;
H = document.doc umentElement. scrollHeight;
} Else if (document. body ){
T = document. body. scrollTop;
L = document. body. scrollLeft;
W = document. body. scrollWidth;
H = document. body. scrollHeight;
}
Return {t: t, l: l, w: w, h: h };
}
</Script>