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  • 仿淘宝商品详情页--放大镜效果

    <!DOCTYPE html>
    <html>
    <head lang="en">
        <meta charset="UTF-8">
        <title></title>
        <style>
            *{margin:0;padding:0;}
            .tab_container{margin:20px auto;width:300px;}
            .tab_content{width:260px;height:130px;}
            .tab_con{width:100%;height:100%;display:none;border:1px solid #ccc;}
            .tab_con.sel{display:block;}
            .tab_con img{width:100%;height:100%;}
            ul{list-style:none;}
            .clearfix{zoom:1;}
            .clearfix:after{content:".";display:block;width:0;height:0;visibility:hidden;clear:both;}
            .tab_btn{margin-top:8px;}
            .tab_btn li{float:left;width:60px;height:30px;line-height:30px;cursor:pointer;text-align:center;border:1px solid #ccc;margin-right:2px;}
            .tab_btn li img{width:100%;height:100%;}
            .jqzoom{
                border:1px solid #BBB;
                float:left;
                position:relative;
                padding:0px;
                cursor:pointer;
            }
            div.zoomdiv {
                z-index:    999;
                position                : absolute;
                top:0px;
                left:0px;
                width                   : 200px;
                height                  : 200px;
                background: #ffffff;
                border:1px solid #CCCCCC;
                display:none;
                text-align: center;
                overflow: hidden;
            }
            div.jqZoomPup {
                z-index                 : 999;
                visibility              : hidden;
                position                : absolute;
                top:0px;
                left:0px;
                width                   : 50px;
                height                  : 50px;
                border: 1px solid #aaa;
                background: #ccc;
                opacity: 0.5;
                -moz-opacity: 0.5;
                -khtml-opacity: 0.5;
                filter: alpha(Opacity=50);
            }
        </style>
    </head>
    <body>
    <div class="tab_container">
        <div class="tab_content">
            <div class="tab_con sel jqzoom"> <img src="images/2.jpg"  alt=""  jqimg="images/1.jpg"/></div>
            <div class="tab_con jqzoom"> <img src="images/2.jpg"  alt=""  jqimg="images/1.jpg"/></div>
            <div class="tab_con jqzoom"> <img src="images/2.jpg"  alt=""  jqimg="images/1.jpg"/></div>
            <div class="tab_con jqzoom"> <img src="images/2.jpg"  alt=""  jqimg="images/1.jpg"/></div>
        </div>
        <ul class="tab_btn clearfix">
            <li class="sel"><img src="images/2.jpg" alt=""/></li>
            <li><img src="images/2.jpg" alt=""/></li>
            <li><img src="images/2.jpg" alt=""/></li>
            <li><img src="images/2.jpg" alt=""/></li>
        </ul>
    </div>
    </body>
    <script src="jquery-1.11.3.min.js"></script>
    <script src="jquery.jqzoom.js"></script>
    <script>
        //选项卡
        $(".tab_btn li").each(function(){
            $(this).on("mouseover",function(){
                var $index=$(this).index();
                $(this).addClass("sel");
                $(this).siblings().removeClass("sel");
                $(this).parent().siblings(".tab_content").find(".tab_con").eq($index).addClass("sel");
                $(this).parent().siblings(".tab_content").find(".tab_con").eq($index).siblings(".tab_con").removeClass("sel");
            })
        });
        //放大镜配置
        $(function() {
            $(".jqzoom").jqueryzoom({
                xzoom: 300, //放大图的宽度(默认是 200)
                yzoom: 300, //放大图的高度(默认是 200)
                offset: 10, //离原图的距离(默认是 10)
                position: "right", //放大图的定位(默认是 "right")
                preload: 1
            });
        });
    </script>
    </html>
    //**************************************************************  
    // jQZoom allows you to realize a small magnifier window,close  
    // to the image or images on your web page easily.  
    //  
    // jqZoom version 2.2  
    // Author Doc. Ing. Renzi Marco(www.mind-projects.it)  
    // First Release on Dec 05 2007  
    // i'm looking for a job,pick me up!!!  
    // mail: renzi.mrc@gmail.com  
    //**************************************************************  
    
    (function($){
    
        $.fn.jqueryzoom = function(options){
    
            var settings = {
                xzoom: 200,     //zoomed width default width
                yzoom: 200,     //zoomed div default width
                offset: 10,     //zoomed div default offset
                position: "right" ,//zoomed div default position,offset position is to the right of the image
                lens:1, //zooming lens over the image,by default is 1;
                preload: 1
    
            };
    
            if(options) {
                $.extend(settings, options);
            }
    
            var noalt='';
    
            $(this).hover(function(){
    
                var imageLeft = $(this).offset().left;
                var imageTop = $(this).offset().top;
    
    
                var imageWidth = $(this).children('img').get(0).offsetWidth;
                var imageHeight = $(this).children('img').get(0).offsetHeight;
    
    
                noalt= $(this).children("img").attr("alt");
    
                var bigimage = $(this).children("img").attr("jqimg");
    
                $(this).children("img").attr("alt",'');
    
                if($("div.zoomdiv").get().length == 0){
    
                    $(this).after("<div class='zoomdiv'><img class='bigimg' src='"+bigimage+"'/></div>");
    
    
                    $(this).append("<div class='jqZoomPup'> </div>");
    
                }
    
    
                if(settings.position == "right"){
    
                    if(imageLeft + imageWidth + settings.offset + settings.xzoom > screen.width){
    
                        leftpos = imageLeft  - settings.offset - settings.xzoom;
    
                    }else{
    
                        leftpos = imageLeft + imageWidth + settings.offset;
                    }
                }else{
                    leftpos = imageLeft - settings.xzoom - settings.offset;
                    if(leftpos < 0){
    
                        leftpos = imageLeft + imageWidth  + settings.offset;
    
                    }
    
                }
    
                $("div.zoomdiv").css({ top: imageTop,left: leftpos });
    
                $("div.zoomdiv").width(settings.xzoom);
    
                $("div.zoomdiv").height(settings.yzoom);
    
                $("div.zoomdiv").show();
    
                if(!settings.lens){
                    $(this).css('cursor','crosshair');
                }
    
    
    
    
                $(document.body).mousemove(function(e){
    
    
    
                    mouse = new MouseEvent(e);
    
                    /*$("div.jqZoomPup").hide();*/
    
    
                    var bigwidth = $(".bigimg").get(0).offsetWidth;
    
                    var bigheight = $(".bigimg").get(0).offsetHeight;
    
                    var scaley ='x';
    
                    var scalex= 'y';
    
    
                    if(isNaN(scalex)|isNaN(scaley)){
    
                        var scalex = (bigwidth/imageWidth);
    
                        var scaley = (bigheight/imageHeight);
    
    
    
    
                        $("div.jqZoomPup").width((settings.xzoom)/scalex );
    
                        $("div.jqZoomPup").height((settings.yzoom)/scaley);
    
                        if(settings.lens){
                            $("div.jqZoomPup").css('visibility','visible');
                        }
    
                    }
    
    
    
                    xpos = mouse.x - $("div.jqZoomPup").width()/2 - imageLeft;
    
                    ypos = mouse.y - $("div.jqZoomPup").height()/2 - imageTop ;
    
                    if(settings.lens){
    
                        xpos = (mouse.x - $("div.jqZoomPup").width()/2 < imageLeft ) ? 0 : (mouse.x + $("div.jqZoomPup").width()/2 > imageWidth + imageLeft ) ?  (imageWidth -$("div.jqZoomPup").width() -2)  : xpos;
    
                        ypos = (mouse.y - $("div.jqZoomPup").height()/2 < imageTop ) ? 0 : (mouse.y + $("div.jqZoomPup").height()/2  > imageHeight + imageTop ) ?  (imageHeight - $("div.jqZoomPup").height() -2 ) : ypos;
    
                    }
    
    
                    if(settings.lens){
    
                        $("div.jqZoomPup").css({ top: ypos,left: xpos });
    
                    }
    
    
    
                    scrolly = ypos;
    
                    $("div.zoomdiv").get(0).scrollTop = scrolly * scaley;
    
                    scrollx = xpos;
    
                    $("div.zoomdiv").get(0).scrollLeft = (scrollx) * scalex ;
    
    
                });
            },function(){
    
                $(this).children("img").attr("alt",noalt);
                $(document.body).unbind("mousemove");
                if(settings.lens){
                    $("div.jqZoomPup").remove();
                }
                $("div.zoomdiv").remove();
    
            });
    
            count = 0;
    
            if(settings.preload){
    
                $('body').append("<div style='display:none;' class='jqPreload"+count+"'>sdsdssdsd</div>");
    
                $(this).each(function(){
    
                    var imagetopreload= $(this).children("img").attr("jqimg");
    
                    var content = jQuery('div.jqPreload'+count+'').html();
    
                    jQuery('div.jqPreload'+count+'').html(content+'<img src="'+imagetopreload+'">');
    
                });
    
            }
    
        }
    
    })(jQuery);
    
    function MouseEvent(e) {
        this.x = e.pageX;
        this.y = e.pageY;
    }  
    jquery.jqzoom.js

    class是jqzoom中img标签的src路径存放的是小图,jqimg属性中存放的是对应的大图

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  • 原文地址:https://www.cnblogs.com/dongxiaolei/p/5779026.html
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