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js仿jquery lightBox图片弹窗放大显示特效

时间：2013-08-31 22:11 来源：互联网作者：源码搜藏收藏推荐

<!DOCTYPE html>
<html lang="en-US"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<meta charset="UTF-8">
<title>js仿jquery-lightBox</title>
<style>
body,ul,li,p,img{margin: 0;padding: 0}
html,body{background: #fff;}
.lightBox{margin:30px auto;width:750px;height: 80px;padding: 10px 0;border: 1px solid #ccc}
.lightBox ul{width: 750px}
.lightBox li{height: 80px;width: 140px;margin:0 5px;float: left;overflow: hidden;display: inline;}
.lightBox li img{height: 80px;width: 140px}
/**弹出层样式***/
.mask{height: 100%;width: 100%;filter:alpha(opacity:0);opacity: 0;background: #000;position: absolute;z-index: 1;left: 0;top:0;display: -none;}
.popup{background:#fff url() no-repeat center;border: 10px solid #fff;position: absolute;z-index: 2;;overflow:-hidden;width: 320px;height: 240px;}
.popup img{height: auto;width: auto;}
.btn{position: absolute;right: 0;top:0;height: 100%;width: 50%;cursor: pointer;}
.prev{left: 0;background: url() no-repeat  0 50px;}
.next{background: url() no-repeat  right 50px;}
.popupBottom{position: relative;z-index: 3;margin-top:4px}
.popupTitle{line-height: 18px;color: #543424;font-family: Arial;font-size: 12px;padding-right: 100px;}
.popupClose{margin-right:15px;height: 22px;width: 66px;background: url() no-repeat;cursor: pointer;z-index: 4;position: absolute;top:0;right: 0;}
</style>
</head>
<body>
<div class="lightBox">
<ul>                       
	<li><img src="http://i.gtimg.cn/qqlive/images/20130726/i1374835850_1.jpg?max_age=604800" _title="仿jquery-lightBox" _src="/jscss/demoimg/wall1.jpg"></li>
	<li><img src="http://i.gtimg.cn/qqlive/images/20130827/i1377566387_1.jpg?max_age=604800" _title="仿jquery-lightBox" _src="/jscss/demoimg/wall2.jpg"></li>
	<li><img src="http://i.gtimg.cn/qqlive/images/20130812/i1376292617_1.jpg?max_age=604800" _title="仿jquery-lightBox" _src="/jscss/demoimg/wall3.jpg"></li>
	<li><img src="http://i.gtimg.cn/qqlive/images/20130815/i1376536099_1.jpg?max_age=604800" _title="仿jquery-lightBox" _src="/jscss/demoimg/wall4.jpg"></li>
	<li><img src="http://i.gtimg.cn/qqlive/images/20130805/i1375691946_1.jpg?max_age=604800" _title="仿jquery-lightBox" _src="/jscss/demoimg/wall5.jpg"></li>
</ul>
</div>
<script>
/*
*  author:涛涛
*  date:2013/8/22
*/
(function(win){
    function myLightBox(elem,isZoom,src,titletxt){
        this.elem=typeof elem=='object' ? elem : this.$('lightBox')[0];
        this.isZoom=typeof isZoom=='undefined' ? true : isZoom;
        this.src=src || '_src';
        this.titletxt=titletxt || '_title';
        this.isShow=false;
        this.index=0;
        this.aImages=this.elem.getElementsByTagName('img');
        this.len=this.aImages.length;
        this.showPopup();
    };
    var lightBox=myLightBox.prototype;
    //显示弹出层
    lightBox.showPopup=function(){
        var self=this,
        img=this.aImages;
        for(var i=0;i<this.len;i++){
            img[i].index=i;
            img[i].onclick=function(){
                 self.index=this.index;
                 self.createPopup(this.getAttribute(self.src),this.getAttribute(self.titletxt));
            }
         }
    };
    //class获取元素
    lightBox.$=function(s,t,p){
    	 var aElement=(p||document).getElementsByTagName(t||'*'),
    	     reg=new RegExp('(^|\\s)'+s+'(\\s|$)'),
    	     aResult=[];
    	 for(var i=0;i<aElement.length;i++){
    	 	  reg.test(aElement[i].className) && aResult.push(aElement[i]);
    	 };
    	 return aResult;
    };

//创建弹出层展示
    //params   src  图片路径
    //params title  显示文字
    lightBox.createPopup=function(src,title){
        var self=this,
        oPopup=document.createElement('div'),//弹出层外框
    	oMask=document.createElement('div'),//遮罩
    	oPrev=document.createElement('div'),//上按钮
    	oNext=document.createElement('div'),//下按钮
    	oBottom=document.createElement('div'),//底部盒子
    	oTitle=document.createElement('div'),//底部文字盒子
    	oClose=document.createElement('div'),//关闭
    	oImg=document.createElement('img'),//图片
        vw=document.documentElement.clientWidth,
        vh=document.documentElement.clientHeight;
    	oMask.className='mask';
    	oPopup.className='popup';
    	oPrev.className='prev btn';
    	oNext.className='next btn';
    	oBottom.className='popupBottom';
    	oTitle.className='popupTitle';
    	oClose.className='popupClose';
    	oTitle.innerHTML=title || '';
        oPopup.style.margin='0';
        oPopup.style.left=(vw-320)/2+'px';
        oPopup.style.top=(vh-240)/2+'px';
        oMask.style.height=this.getFullHeight()+'px';
        this.hide(oPrev,oNext,oBottom,oClose,oImg);
        oBottom.appendChild(oClose);
        oBottom.appendChild(oTitle);
        oPopup.appendChild(oPrev);
        oPopup.appendChild(oNext);
        oPopup.appendChild(oImg);
        oPopup.appendChild(oBottom);
        document.body.appendChild(oMask);
        document.body.appendChild(oPopup);
    	oImg.onload=function(){
            self.show(this,oClose,oBottom,oNext,oPrev);
            this.style.height='auto';
            this.style.width='auto';
            var oldw=self.css(oPopup,'width'),oldh=self.css(oPopup,'height');
            oPopup.style.height='auto';
            oPopup.style.width='auto';
            oPopup.style.opacity=0;
            oPopup.style.filter='alpha(opacity:0)';
            var h=oPopup.clientHeight,w=oPopup.clientWidth;
            oPopup.style.height=oldh;
            oPopup.style.width=oldw;
            self.hide(oBottom,oImg);
            self.move(oPopup,{opacity:100,height:h,width:w,left:parseInt((vw-w)/2),top:parseInt((vh-h)/2)},5,function(){
                 self.show(oBottom,oImg);
                 oImg.style.width='100%';
                 self.isShow=true;
            });
    	};
        self.move(oMask,{opacity:60},5);
        oImg.src=src;
        this.prev=oPrev;
        this.next=oNext;
        this.close=oClose;
        this.img=oImg;
        this.txt=oTitle;
        this.btm=oBottom;
        this.p=oPopup;
        this.mask=oMask;
        this.nexts();
        this.prevs();
        this.stopPropagation();
        this.closes();
        this.isZoom && this.mouseWheels();
        this.resizefn();
    };
    //============重置窗口大小
    lightBox.resizefn=function(){
        if(!this.p)return;
        var self=this;
        this.addEvent(window,'resize',function(){
            if(!self.p)return;
            var viw=self.getWinSize()[0],
            vih=self.getWinSize()[1],
            p=self.p,ms=self.mask,
            h=p.offsetHeight,w=p.offsetWidth;

self.css(p,'left',(viw-w)/2);
            self.css(p,'top',(vih-h)/2);
            self.css(ms,'height',Math.max(h,vih));
            self.css(ms,'width',Math.max(w,viw));
        })
    };
    //===============获取窗口大小
    lightBox.getWinSize=function(){
        var d=document.documentElement;
        return [d.clientWidth,d.clientHeight];
    };
    //==============鼠标滚轮
    lightBox.mouseWheels=function(){
        this.addEvent(document,'mousewheel',wheel);
        this.addEvent(document,'DOMMouseScroll',wheel);
        var self=this,isBeyond=false;

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