滚动条(兼容火狐狸、IE、chrome)[同事修改jsScrollbar]
日期：2014-05-16 浏览次数：20309 次
滚动条(兼容火狐、IE、chrome)[同事修改jsScrollbar]
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
<style type="text/css">
*{ margin:0px; padding: 0px; list-style:none;}
.box { width:500px; margin:0 auto; position:relative; top:100px; }
.Container { position: absolute; top:0px; left: 100px; width: 400px; height: 200px; background-color: #EEE; }
#Scroller-1 { position: absolute; overflow: hidden; width: 400px; height: 200px; }
#Scroller-1 p { margin: 0; padding: 10px 20px; font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 11px; text-indent: 20px; color: #777; }
.Scroller-Container { position: absolute; top: 0px; left: 0px; }
.Scrollbar-Track { width: 10px; height: 200px; position: absolute; top: 0px; right:0px; background-color: #EEE; cursor:pointer; }
.Scrollbar-Handle { position: absolute; top: 0px; left: 0px; width: 10px; height: 30px; background-color: #CCC; }
</style>
<script type="text/javascript">
var scroller = null;
var scrollbar = null;
window.onload = function () {
scroller = new jsScroller(document.getElementById("Scroller-1"), 400, 200);
scrollbar = new jsScrollbar (document.getElementById("Scrollbar-Container"), scroller, false);
}
function jsScroller (o, w, h) {
var self = this;
var list = o.getElementsByTagName("div");
for (var i = 0; i < list.length; i++) {
if (list[i].className.indexOf("Scroller-Container") > -1) {
o = list[i]; // 以 o 为对象，将对象包含的class名为Scroller-Container的元素付给 对象 o
}
}
//Private methods
this._setPos = function (x, y) {
if (x < this.viewableWidth - this.totalWidth)
x = this.viewableWidth - this.totalWidth;
if (x > 0) x = 0;
if (y < this.viewableHeight - this.totalHeight)
y = this.viewableHeight - this.totalHeight;
if (y > 0) y = 0;
this._x = x;
this._y = y;
with (o.style) {
left = this._x +"px";
top = this._y +"px";
}
};
//Public Methods
this.reset = function () {
this.content = o;
this.totalHeight = o.offsetHeight;
this.totalWidth = o.offsetWidth;
this._x = 0;
this._y = 0;
with (o.style) {
left = "0px";
top = "0px";
}
};
this.scrollBy = function (x, y) {
this._setPos(this._x + x, this._y + y);
};
this.scrollTo = function (x, y) {
this._setPos(-x, -y);
};
this.stopScroll = function () {
if (this.scrollTimer) window.clearInterval(this.scrollTimer);
};
this.startScroll = function (x, y) {
this.stopScroll();
this.scrollTimer = window.setInterval(
function(){ self.scrollBy(x, y); }, 40
);
};
this.swapContent = function (c, w, h) {
o = c;
var list = o.getElementsByTagName("div");
for (var i = 0; i < list.length; i++) {
if (list[i].className.indexOf("Scroller-Container") > -1) {
o = list[i];
}
}
if (w) this.viewableWidth = w;
if (h) this.viewableHeight = h;
this.reset();
};
//variables
this.content = o;
this.viewableWidth = w;
this.viewableHeight = h;
this.totalWidth = o.offsetWidth;
this.totalHeight = o.offsetHeight;
this.scrollTimer = null;
this.reset();
};
function jsScrollbar (o, s, a, ev) {
var self = this;
this.reset = function () {
//Arguments that were passed
this._parent = o;
this._src = s;
this.auto = a ? a : false;
this.eventHandler = ev ? ev : function () {};
//Component Objects
this._up = this._findComponent("Scrollbar-Up", this._parent);
this._down = this._findComponent("Scrollbar-Down", this._parent);
this._yTrack = this._findComponent("Scrollbar-Track", this._parent);
this._yHandle = this._findComponent("Scrollbar-Handle", this._yTrack);
//Height and position properties
this._trackTop = findOffsetTop(this._yTrack);
this._trackHeight = this._yTrack.offsetHeight;
this._
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