简单JS切换效果
<!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>JavaScript 图片切换展示效果</title>
</head>
<body>
<style type="text/css">
.container, .container *{margin:0; padding:0;}
.container{width:351px; height:237px; overflow:hidden;position:relative;}.slider{position:absolute;}
.slider li{ list-style:none;display:inline;}
.slider img{ width:351px; height:237px; display:block;}.slider2{width:2000px;}
.slider2 li{float:left;}.num{ position:absolute; right:5px; bottom:5px;}
.num li{
float: left;
color: #FF7300;
text-align: center;
line-height: 16px;
width: 16px;
height: 16px;
font-family: Arial;
font-size: 12px;
cursor: pointer;
overflow: hidden;
margin: 3px 1px;
border: 1px solid #FF7300;
background-color: #fff;
}
.num li.on{
color: #fff;
line-height: 21px;
width: 21px;
height: 21px;
font-size: 16px;
margin: 0 1px;
border: 0;
background-color: #FF7300;
font-weight: bold;
}
</style>
<div class="container" id="idTransformView">
<ul class="slider" id="idSlider">
<li><img src="11.jpg"/></li>
<li><img src="22.jpg"/></li>
<li><img src="33.jpg"/></li>
</ul>
<ul class="num" id="idNum">
<li>1</li>
<li>2</li>
<li>3</li>
</ul>
</div>
<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;
};
var TransformView = Class.create();
TransformView.prototype = {
//容器对象,滑动对象,切换参数,切换数量
initialize: function(container, slider, parameter, count, options) {
if (parameter <= 0 || count <= 0) return;
var oContainer = $(container), oSlider = $(slider), oThis = this; this.Index = 0; //当前索引
this._timer = null; //定时器
this._slider = oSlider; //滑动对象
this._parameter = parameter; //切换参数
this._count = count || 0; //切换数量
this._target = 0; //目标参数
this.SetOptions(options);
this.Up = !!this.options.Up;
this.Step = Math.abs(this.options.Step);
this.Time = Math.abs(this.options.Time);
this.Auto = !!this.options.Auto;
this.Pause = Math.abs(this.options.Pause);
this.onStart = this.options.onStart;
this.onFinish = this.options.onFinish;
oContainer.style.overflow = "hidden";
oContainer.style.position = "relative";
oSlider.style.position = "absolute";
oSlider.style.top = oSlider.style.left = 0;
},
//设置默认属性
SetOptions: function(options) {
this.options = {//默认值
Up: true, //是否向上(否则向左)
Step: 20, //滑动变化率
Time: 10, //滑动延时
Auto: true, //是否自动转换
Pause: 2000, //停顿时间(Auto为true时有效)
onStart: function() { }, //开始转换时执行
onFinish: function() { } //完成转换时执行
};
Object.extend(this.options, options || {});
},
//开始切换设置
Start: function() {
if (this.Index < 0) {
this.Index = this._count - 1;
} else if (this.Index >= this._count) { this.Index = 0; }
this._target = -1 * this._parameter * this.Index;
this.onStart();
this.Move();
},
//移动
Move: function() {
clearTimeout(this._timer);
var oThis = this, style = this.Up ? "top" : "left", iNow = parseInt(this._slider.style[style]) || 0, iStep = this.GetStep(this._target, iNow);
if (iStep != 0) {
this._slider.style[style] = (iNow + iStep) + "px";
this._timer = setTimeout(function() { oThis.Move(); }, this.Time);
} else {
this._slider.style[style] = this._target + "px";
this.onFinish();
if (this.Auto) { this._timer = setTimeout(function() { oThis.Index++; oThis.Start(); }, this.Pause); }
}
},
//获取步长
GetStep: function(iTarget, iNow) {
var iStep = (iTarget - iNow) / this.Step;
if (iStep == 0) return 0;
if (Math.abs(iStep) < 1) return (iStep > 0 ? 1 : -1);
return iStep;
},
//停止
Stop: function(iTarget, iNow) {
clearTimeout(this._timer);
this._slider.style[this.Up ? "top" : "left"] = this._target + "px";
}
}; window.onload = function() {
function Each(list, fun) {
for (var i = 0, len = list.length; i < len; i++) { fun(list[i], i); }
};
var objs = $("idNum").getElementsByTagName("li");
var tv = new TransformView("idTransformView", "idSlider", 237, 3, {
onStart: function() { Each(objs, function(o, i) { o.className = tv.Index == i ? "on" : ""; }) } //按钮样式
});
tv.Start();
Each(objs, function(o, i) {
o.onmouseover = function() {
o.className = "on";
tv.Auto = false;
tv.Index = i;
tv.Start();
}
o.onmouseout = function() {
o.className = "";
tv.Auto = true;
tv.Start();
}
})
Each(objs2, function(o, i) {
o.onmouseover = function() {
o.className = "on";
tv2.Auto = false;
tv2.Index = i;
tv2.Start();
}
o.onmouseout = function() {
o.className = "";
tv2.Auto = true;
tv2.Start();
}
})
}
</script>
</body>
</html>
