Posted in Javascript onMarch 26, 2013
/*放大镜*/ .ZoomMain {margin:100px;width:395px;height:460px;float:left;position:relative;} .ZoomMain .zoom {height:393px;width:393px;position:relative;border: 1px solid #dcdddd;} .ZoomMain .zoom .move{position:absolute;left:0; top:0;display:none;width:195px; height:195px;background:#000;opacity:0.2;filter:Alpha(Opacity=20);} .ZoomMain .zoomDetail{display:none;border:1px solid #DCDDDD;width: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;width:10px;height:55px;background:#999;cursor:pointer;} .littleImg span em {display: none;width: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 {width:343px;height:55px;margin-left:26px;overflow:hidden;position:relative;} .littleImg .slideMain ul {position:absolute;left:0;width:355px;padding-top:1px;} .littleImg .slideMain ul li {float:left;margin-right:6px;cursor:pointer;width:50px;height:50px;border:1px solid #dbdbdb;} .littleImg .slideMain ul li.selected {border-color:#999;} .littleImg .slideMain ul li img {float:left;width: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",$(o).find("img").attr("medium-img")); }, move:function(x,y){//鼠标在放大区域移动的时候执行的函数 this.XY=this.mousePosAndSetPos(x,y);//计算出鼠标相对于放大区域的x,y值 //设置滑块的位置 this.moveArea.css({ left:this.XY.offsetX+"px", top:this.XY.offsetY+"px" }); //设置大图在细节位置 this.zoomDetailImg.css({ marginLeft:-this.XY.offsetX*this.moveBili+"px", marginTop:-this.XY.offsetY*this.moveBili+"px" }); }, mousePosAndSetPos:function(x,y){//实时计算并设置滑块的位置 x=x-this.zoomAreaOffset.left-this.moveArea.width()/2; y=y-this.zoomAreaOffset.top-this.moveArea.height()/2; x=x<0?0:x; y=y<0?0:y; x=x>(this.zoomAreaWidth-this.moveAreaWidth)?this.zoomAreaWidth-this.moveAreaWidth:x; y=y>(this.zoomAreaHeight-this.moveAreaHeight)?this.zoomAreaHeight-this.moveAreaHeight:y; return { offsetX:x, offsetY:y }; }, calculate:function(){//计算函数 var widthBili,heightBili; //计算移动的滑块与放大镜铺面显示的比例宽高 widthBili=(this.zoomAreaWidth*this.zoomDetailWidth)/this.moveAreaWidth; heightBili=(this.zoomAreaHeight*this.zoomDetailHeight)/this.moveAreaHeight; //把比出来的宽高 this.zoomDetailImg.css({width:widthBili+"px",height:heightBili+"px"}); //返回移动的比例 this.moveBili=(widthBili-this.zoomDetailWidth)/(this.zoomAreaWidth-this.moveAreaWidth); } }; var zoom=new Zoom($(".ZoomMain").eq(0)); })();
jquery图片放大镜功能的实例代码
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