js左右滚屏

最新推荐文章于 2024-10-26 09:26:30 发布

原创最新推荐文章于 2024-10-26 09:26:30 发布 · 130 阅读

CC 4.0 BY-SA版权

文章标签：

<!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=gb2312" />
<title></title>
</head>
<body>

<script type="text/javascript">
var $ = function (id) {
return "string" == typeof id ? document.getElementById(id) : id;
};

var Class = {
create: function() {
return function() {
this.initialize.apply(this, arguments);
}
}
}

Object.extend = function(destination, source) {
for (var property in source) {
destination[property] = source[property];
}
return destination;
}

function addEventHandler(oTarget, sEventType, fnHandler) {
if (oTarget.addEventListener) {
oTarget.addEventListener(sEventType, fnHandler, false);
} else if (oTarget.attachEvent) {
oTarget.attachEvent("on" + sEventType, fnHandler);
} else {
oTarget["on" + sEventType] = fnHandler;
}
};

var Scroller = Class.create();
Scroller.prototype = {
initialize: function(idScroller, idScrollMid, idScrollLeft, idScrollRight, options) {
var oScroll = this, oScroller = $(idScroller), oScrollMid = $(idScrollMid);

this.widthScroller = oScroller.offsetWidth;
this.widthList = oScrollMid.offsetWidth;

if(this.widthList <= this.widthScroller) return;

oScroller.style.overflow = "hidden";
oScrollMid.appendChild(oScrollMid.cloneNode(true));

this.oScroller = oScroller;
this.scroll = true;

this.SetOptions(options);

this.side = 1;//1是左 -1是右
switch (this.options.Side) {
case "right" :
this.side = -1;
break;
case "left" :
default :
this.side = 1;
}

addEventHandler(oScrollMid , "mouseover", function() { oScroll.scroll = false; });
addEventHandler(oScrollMid , "mouseout", function() { oScroll.scroll = true; });

if(idScrollLeft) { addEventHandler($(idScrollLeft), "click", function() { oScroll.side = 1; }); }
if(idScrollRight) { addEventHandler($(idScrollRight), "click", function() { oScroll.side = -1; }); }

this.Scroll();
},
//设置默认属性
SetOptions: function(options) {
this.options = {//默认值
Step: 1,//每次变化的px量
Time: 50,//速度
Side: "left"//默认滚动方向
};
Object.extend(this.options, options || {});
},
//滚动
Scroll: function() {
if (this.scroll) {
var iScroll = this.oScroller.scrollLeft, iWidth = this.widthList;
if(this.side > 0){
if(iScroll >= (iWidth * 2 - this.widthScroller)){ iScroll -= iWidth; }
} else {
if(iScroll <= 0){ iScroll += iWidth; }
}
this.oScroller.scrollLeft = iScroll + this.options.Step * this.side;//注意scrollLeft超过1400会自动变回1400 注意长度
}
var oScroll = this; window.setTimeout(function(){ oScroll.Scroll(); }, this.options.Time);
}
};

window.onload = function(){
new Scroller("idScroller","idScrollMid", "idScrollLeft", "idScrollRight");
}
</script>
<div id="idScroller" style="width:290px; overflow:hidden">
<div style="width:2000px">
<div id="idScrollMid" style="float:left;">
<div style="float:left"> <img src="1.jpg" width="150px" height="150px;"/> </div>
<div style="float:left"> <img src="1.jpg" width="150px" height="150px;"/> </div>
</div>
</div>
</div>
<input id="idScrollLeft" type="button" value="向左" />
<input id="idScrollRight" type="button" value="向右" />
</body>
</html>