京东商城用来展示产品代码

/*jqueryzoom&&jcarousel*/
(function($){
$.fn.jqueryzoom=function(options){
var settings={
xzoom:200,
yzoom:200,
offset:10,
position:"right",
lens: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("

");
$(this).append("

 

");}
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');}
$(document.body).mousemove(function(e){
mouse=new MouseEvent(e);
var bigwidth=$(".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*1));
$("div.jqZoomPup").height((settings.yzoom)/(scaley*1));
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("

360buy

");
$(this).each(function(){
var imagetopreload=$(this).children("img").attr("jqimg");
var content=jQuery('div.jqPreload'+count+'').html();
jQuery('div.jqPreload'+count+'').html(content+'');});}}})(jQuery);
function MouseEvent(e){
this.x=e.pageX;

this.y=e.pageY;}

详细运用：http://www.qichepeijian.com/benchi/c1084108260-06-0601-1.html