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  • jquery放大镜

    /*放大镜*/
    .ZoomMain {margin:100px;395px;height:460px;float:left;position:relative;}
    .ZoomMain .zoom {height:393px;393px;position:relative;border: 1px solid #dcdddd;}
    .ZoomMain .zoom .move{position:absolute;left:0; top:0;display:none;195px; height:195px;background:#000;opacity:0.2;filter:Alpha(Opacity=20);}
    .ZoomMain .zoomDetail{display:none;border:1px solid #DCDDDD;393px; height:393px; position:absolute;right:-405px;top:0px; overflow:hidden;}
    .littleImg {margin-top:10px;height:54px;overflow:hidden;position:relative;}
    .littleImg span {position: absolute;display:block;10px;height:55px;background:#999;cursor:pointer;}
    .littleImg span em {display: none;10px;height:55px;}
    .littleImg span.btnL {left:0;background: url(oohdear/images/cssPos/UltimatePageCssPos.gif) no-repeat left top;}
    .littleImg span.btnL em {background: url(oohdear/images/cssPos/UltimatePageCssPos.gif) no-repeat left -57px;}
    .littleImg span.btnR em {background: url(oohdear/images/cssPos/UltimatePageCssPos.gif) no-repeat -10px -57px;}
    .littleImg span.btnR {right:0;background: url(oohdear/images/cssPos/UltimatePageCssPos.gif) no-repeat -10px top;}
    .littleImg span.hover em {display:block;}
    .littleImg .slideMain {343px;height:55px;margin-left:26px;overflow:hidden;position:relative;}
    .littleImg .slideMain ul {position:absolute;left:0;355px;padding-top:1px;}
    .littleImg .slideMain ul li {float:left;margin-right:6px;cursor:pointer;50px;height:50px;border:1px solid #dbdbdb;}
    .littleImg .slideMain ul li.selected {border-color:#999;}
    .littleImg .slideMain ul li img {float:left;50px;height:50px;}
    /*放大镜end*/
    </style>
    </head>
    <body>
    <!--放大镜-->
    <div class="ZoomMain">
      <div class="zoom">
      		 <span class="move"></span>
      		 <img width="393" height="390"  src="1347000569971.jpg" />
      </div>
      <div class="littleImg">
           <span class="btnL"><em></em></span>
           <span class="btnR"><em></em></span>
            <div class="slideMain">
                  <ul class="clearfix">
                    <li class="selected"><img width="50" height="50" src="1347000569971.jpg" medium-img="1347000569971.jpg" large-img="1347000569971.jpg" /></li>
                    <li><img width="50" height="50" src="1347000590691.jpg" medium-img="1347000590691.jpg" large-img="1347000590691.jpg" /></li>
                    <li><img width="50" height="50" src="1347000569971.jpg" medium-img="1347000569971.jpg" large-img="1347000569971.jpg" /></li>
                    <li><img width="50" height="50" src="1347000590691.jpg" medium-img="1347000590691.jpg" large-img="1347000590691.jpg" /></li>
                    <li><img width="50" height="50" src="1347000569971.jpg" medium-img="1347000569971.jpg" large-img="1347000569971.jpg" /></li>
                    <li><img width="50" height="50" src="1347000590691.jpg" medium-img="1347000590691.jpg" large-img="1347000590691.jpg" /></li>
                    <li><img width="50" height="50" src="1347000569971.jpg" medium-img="1347000569971.jpg" large-img="1347000569971.jpg" /></li>
                    <li><img width="50" height="50" src="1347000590691.jpg" medium-img="1347000590691.jpg" large-img="1347000590691.jpg" /></li>
                    <li><img width="50" height="50" src="1347000569971.jpg" medium-img="1347000569971.jpg" large-img="1347000569971.jpg" /></li>
                    <li><img width="50" height="50" src="1347000590691.jpg" medium-img="1347000590691.jpg" large-img="1347000590691.jpg" /></li>
                    <li><img width="50" height="50" src="1347000569971.jpg" medium-img="1347000569971.jpg" large-img="1347000569971.jpg" /></li>
                    <li><img width="50" height="50" src="1347000590691.jpg" medium-img="1347000590691.jpg" large-img="1347000590691.jpg" /></li>
                    <li><img width="50" height="50" src="1347000569971.jpg" medium-img="1347000569971.jpg" large-img="1347000569971.jpg" /></li>
                    <li><img width="50" height="50" src="1347000590691.jpg" medium-img="1347000590691.jpg" large-img="1347000590691.jpg" /></li>
                  </ul>
            </div>
      </div>
      <div class="zoomDetail">
             	<img width="701" height="701" src="1347000569971.jpg" />
      </div>
    </div>
    <!--放大镜end-->
    

      

    <script type="text/javascript">
    /**
    @开发:杨永
    @功能:实现细节放大,图片对应切换,自由定义css样式实现自由铺满视口等功能
    @说明:基于jQ的放大镜插件,可根据需要自由调整布局来适应各种设计效果
    */
    (function(){
    		function Zoom(object){
    			 	this.zoomArea=$(".zoom",object);//保存促发放大效果的区域
    				this.moveArea=$(".move",object);//保存移动区域
    				this.zoomDetail=$(".zoomDetail",object);//保存放大镜区域
    				this.zoomDetailImg=$("img",this.zoomDetail);//保存放大镜里面的图
    				this.zoomAreaWidth=this.zoomArea.width();
    				this.moveAreaWidth=this.moveArea.width();
    				this.zoomAreaHeight=this.zoomArea.height();
    				this.moveAreaHeight=this.moveArea.height();
    				this.zoomDetailWidth=this.zoomDetail.width();
    				this.zoomDetailHeight=this.zoomDetail.height();
    				this.zoomAreaOffset=this.zoomArea.offset();//初始化放大区域在视口中的相对偏移;
    				this.XY=null;//初始化鼠标相对于放大区域的偏移偏移值
    				this.moveBili=null;//
    				var _this_=this;
    				this.zoomArea.mousemove(function(e){//当鼠标在放大区域移动的时候执行
    												 _this_.move(e.pageX,e.pageY);	 
    										}).mouseover(function(){
    											_this_.moveArea.show();
    											_this_.zoomDetail.show();
    											}).mouseout(function(){
    												_this_.moveArea.hide();
    												_this_.zoomDetail.hide();												
    												});
    				this.calculate();//初始化并计算出需要的比例值
    				//以下是小图部分的功能实现
    				this.l=0;
    				this.scrollObj=$(".slideMain ul",object);//保存ul滚动对象
    				this.lis=this.scrollObj.children();//保存小图片列表
    				this.btnR=$(".btnR",object);//保存右边按钮
    				this.btnL=$(".btnL",object);//保存左边边按钮
    				this.lis.click(function(){
    										_this_.changeImgSrc(this);
    										});
    				if(this.lis.length>6){//判断图片数是否超出显示区域,是的话就注册滚动事件
    					this.s=this.lis.length-6;//获取多余出来的图片数
    					this.scrollObj.width(60*this.lis.length+"px");//当图片数超出默认值时,设置ul的宽度
    					this.btnL.click(function(){_this_.scrollRight();}).mouseover(function(){$(this).addClass("hover")}).mouseout(function(){$(this).removeClass("hover");});
    					this.btnR.click(function(){_this_.scrollLeft();}).mouseover(function(){$(this).addClass("hover")}).mouseout(function(){$(this).removeClass("hover");});;
    				}
    			  };
    		Zoom.prototype={
    			scrollLeft:function(){
    				if(Math.abs(this.l)==this.s){return};
    				this.l--;
    				this.scrollObj.animate({left:this.l*58+"px"},"fast");	
    				},
    			scrollRight:function(){
    				if(this.l==0){return};
    				this.l++;
    				this.scrollObj.animate({left:this.l*58+"px"},"fast");
    				},
    			changeImgSrc:function(o){
    				//改变标识样式
    				$(o).addClass("selected").siblings().removeClass("selected");
    				this.zoomArea.find("img").attr("src",$(o).find("img").attr("medium-img"));
    				this.zoomDetailImg.attr("src",$(o).find("img").attr("medium-img"));
    				
    				},
    			move:function(x,y){//鼠标在放大区域移动的时候执行的函数
    					this.XY=this.mousePosAndSetPos(x,y);//计算出鼠标相对于放大区域的x,y值
    					//设置滑块的位置
    					this.moveArea.css({
    									  left:this.XY.offsetX+"px",
    									  top:this.XY.offsetY+"px"
    									  });
    					//设置大图在细节位置
    					this.zoomDetailImg.css({
    										   marginLeft:-this.XY.offsetX*this.moveBili+"px",
    										   marginTop:-this.XY.offsetY*this.moveBili+"px"
    										   });
    				},
    			mousePosAndSetPos:function(x,y){//实时计算并设置滑块的位置
    				x=x-this.zoomAreaOffset.left-this.moveArea.width()/2;
    				y=y-this.zoomAreaOffset.top-this.moveArea.height()/2;
    				x=x<0?0:x;
    				y=y<0?0:y;
    				x=x>(this.zoomAreaWidth-this.moveAreaWidth)?this.zoomAreaWidth-this.moveAreaWidth:x;
    				y=y>(this.zoomAreaHeight-this.moveAreaHeight)?this.zoomAreaHeight-this.moveAreaHeight:y;
    				return {
    						offsetX:x,
    						offsetY:y
    						};	
    				},
    			calculate:function(){//计算函数
    					var widthBili,heightBili;
    					//计算移动的滑块与放大镜铺面显示的比例宽高
    					widthBili=(this.zoomAreaWidth*this.zoomDetailWidth)/this.moveAreaWidth;
    					heightBili=(this.zoomAreaHeight*this.zoomDetailHeight)/this.moveAreaHeight;
    					//把比出来的宽高
    					this.zoomDetailImg.css({widthBili+"px",height:heightBili+"px"});
    					//返回移动的比例
    					this.moveBili=(widthBili-this.zoomDetailWidth)/(this.zoomAreaWidth-this.moveAreaWidth);
    				}
    			};
    		  var zoom=new Zoom($(".ZoomMain").eq(0));	  
    })();
    

      

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  • 原文地址:https://www.cnblogs.com/yangliulang/p/2981837.html
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