带预览图的js切换效果!

效果图:

js代码:

var isIE = (document.all) ? true : false;

var $ = function (id) {
	return "string" == typeof id ? document.getElementById(id) : id;
};

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

var Extend = function(destination, source) {
	for (var property in source) {
		destination[property] = source[property];
	}
}

var Bind = function(object, fun) {
	return function() {
		return fun.apply(object, arguments);
	}
}

var Each = function(list, fun){
	for (var i = 0, len = list.length; i < len; i++) { fun(list[i], i); }
};


//ie only
var RevealTrans = Class.create();
RevealTrans.prototype = {
  initialize: function(container, options) {
	this._img = document.createElement("img");
	this._a = document.createElement("a");
	
	this._timer = null;//计时器
	this.Index = 0;//显示索引
	this._onIndex = -1;//当前索引
	
	this.SetOptions(options);
	
	this.Auto = !!this.options.Auto;
	this.Pause = Math.abs(this.options.Pause);
	this.Duration = Math.abs(this.options.Duration);
	this.Transition = parseInt(this.options.Transition);
	this.List = this.options.List;
	this.onShow = this.options.onShow;
	
	//初始化显示区域
	this._img.style.visibility = "hidden";//第一次变换时不显示红x图
	this._img.style.width = this._img.style.height = "100%"; this._img.style.border = 0;
	this._img.onmouseover = Bind(this, this.Stop);
	this._img.onmouseout = Bind(this, this.Start);
	isIE && (this._img.style.filter = "revealTrans()");
	
	this._a.target = "_blank";
	
	$(container).appendChild(this._a).appendChild(this._img);
  },
  //设置默认属性
  SetOptions: function(options) {
	this.options = {//默认值
		Auto:		true,//是否自动切换
		Pause:		1000,//停顿时间(微妙)
		Duration:	1,//变换持续时间(秒)
		Transition:	23,//变换效果(23为随机)
		List:		[],//数据集合,如果这里不设置可以用Add方法添加
		onShow:		function(){}//变换时执行
	};
	Extend(this.options, options || {});
  },
  Start: function() {
	clearTimeout(this._timer);
	//如果没有数据就返回
	if(!this.List.length) return;
	//修正Index
	if(this.Index < 0 || this.Index >= this.List.length){ this.Index = 0; }
	//如果当前索引不是显示索引就设置显示
	if(this._onIndex != this.Index){ this._onIndex = this.Index; this.Show(this.List[this.Index]); }
	//如果要自动切换
	if(this.Auto){
		this._timer = setTimeout(Bind(this, function(){ this.Index++; this.Start(); }), this.Duration * 1000 + this.Pause);
	}
  },
  //显示
  Show: function(list) {
	if(isIE){
		//设置变换参数
		with(this._img.filters.revealTrans){
			Transition = this.Transition; Duration = this.Duration; apply(); play();
		}
	}
	this._img.style.visibility = "";
	//设置图片属性
	this._img.src = list.img; this._img.alt = list.text;
	//设置链接
	!!list["url"] ? (this._a.href = list["url"]) : this._a.removeAttribute("href");
	//附加函数
	this.onShow();
  },
  //添加变换对象
  Add: function(sIimg, sText, sUrl) {
	this.List.push({ img: sIimg, text: sText, url: sUrl });
  },
  //停止
  Stop: function() {
	clearTimeout(this._timer);
  }
};

  html代码:

<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
    <title>图片切换效果</title>
    <script src="RevealTrans.js"></script>
</head>
<body>
    <style type="text/css">
        .container
        {
             335px;
            height: 262px;
            border: 1px solid #eee;
            position: absolute;
        }
        #idPicText
        {
            background: #000;
            line-height: 25px;
            text-align: center;
            font-weight: bold;
             336px;
            white-space: nowrap;
            overflow: hidden;
            font-size: 12px;
            z-index: 1000;
            position: absolute;
            margin-top:238px;
            opacity:.7;
            filter:alpha(opacity=70);
        }
        #idPicText a
        {
            text-decoration: none;
            color: #333;
            display: block;
        }
        #idPicList
        {
             335px;
            height: 72px;
            padding-top:263px;
        }
        #idPicList img
        {
            cursor: pointer;
             90px;
            height: 70px;
            filter: alpha(opacity=50);
            -moz-opacity: .5;
            opacity: .5;
            border: 0;
            padding-left: 16px;
        }
        #idPicList img.on
        {
            filter: alpha(opacity=100);
            -moz-opacity: 1;
            opacity: 1;
        }
        
        #idNum
        {
            position: absolute;
            right: 5px;
            bottom: 5px;
            display: none;
        }
        #idNum li
        {
            float: left;
            list-style: none;
            color: #fff;
            text-align: center;
            line-height: 16px;
             16px;
            height: 16px;
            font-family: Arial;
            font-size: 12px;
            cursor: pointer;
            margin: 1px;
            border: 1px solid #707070;
            background-color: #060a0b;
        }
        #idNum li.on
        {
            line-height: 18px;
             18px;
            height: 18px;
            font-size: 14px;
            border: 0;
            background-color: #ce0609;
            font-weight: bold;
        }
    </style>
    <div id="idPicShow" class="container">
        <ul id="idNum">
        </ul>
    </div>
    <div id="idPicText">
    </div>
    <div id="idPicList">
    </div>
    <script>
        var rvt = new RevealTrans("idPicShow");

        //添加变换对象
        rvt.Add('http://images.cnblogs.com/cnblogs_com/cloudgamer/143727/r_rt_1.jpg', '图片变换效果', 'http://www.cnblogs.com/cloudgamer/archive/2008/05/23/1205642.html');
        rvt.Add('http://images.cnblogs.com/cnblogs_com/cloudgamer/143727/r_rt_2.jpg', '图片滑动展示效果', 'http://www.cnblogs.com/cloudgamer/archive/2008/05/13/1194272.html');
        rvt.Add('http://images.cnblogs.com/cnblogs_com/cloudgamer/143727/r_rt_3.jpg', '图片切换展示效果', 'http://www.cnblogs.com/cloudgamer/archive/2008/07/06/1236770.html');


        var oList = $("idPicList"), oText = $("idPicText"), arrImg = [];

        var oNum = $("idNum"), arrNum = [];

        //设置图片列表
        Each(rvt.List, function (list, i) {
            //图片式
            var img = document.createElement("img");
            img.src = list["img"]; img.alt = list["text"];
            arrImg[i] = img;
            oList.appendChild(img);
            //按钮式
            var li = document.createElement("li");
            li.innerHTML = i + 1;
            arrNum[i] = li;
            oNum.appendChild(li);
            //事件设置
            img.onmouseover = li.onmouseover = function () { rvt.Auto = false; rvt.Index = i; rvt.Start(); };
            img.onmouseout = li.onmouseout = function () { rvt.Auto = true; rvt.Start(); };
        });

        //设置图片列表样式 文本显示区域
        rvt.onShow = function () {
            var i = this.Index, list = this.List[i];
            //图片式
            Each(arrImg, function (o) { o.className = ""; }); arrImg[i].className = "on";
            //按钮式
            Each(arrNum, function (o) { o.className = ""; }); arrNum[i].className = "off";
            //文本区域
            oText.innerHTML = !!list.url ? "<a href='" + list.url + "' target='_blank'>" + list.text + "</a>" : list.text;
        }

        //文本显示区域
        oText.onmouseover = function () { rvt.Auto = false; rvt.Stop(); };
        oText.onmouseout = function () { rvt.Auto = true; rvt.Start(); };

        rvt.Start();

    </script>
</body>
</html>

  

原文地址:https://www.cnblogs.com/fumj/p/2369289.html