Jquery 最近浏览过的商品的功能实现代码

<script type="text/javascript" src="JS/jquery.js"></script> //与Prototype 类似的框架
<script type="text/javascript" src="JS/JCookie.js"></script> //插件

/*JCookie.js * / 
jQuery.cookie = function(name, value, options) { 
if (typeof value != 'undefined') { // name and value given, set cookie 
options = options || {}; 
if (value === null) { 
value = ''; 
options.expires = -1; 
} 
var expires = ''; 
if (options.expires && (typeof options.expires == 'number' || options.expires.toUTCString)) { 
var date; 
if (typeof options.expires == 'number') { 
date = new Date(); 
date.setTime(date.getTime() + (options.expires * 24 * 60 * 60 * 1000)); 
} else { 
date = options.expires; 
} 
expires = '; expires=' + date.toUTCString(); // use expires attribute, max-age is not supported by IE 
} 
var path = options.path ? '; path=' + options.path : ''; 
var domain = options.domain ? '; domain=' + options.domain : ''; 
var secure = options.secure ? '; secure' : ''; 
document.cookie = [name, '=', encodeURIComponent(value), expires, path, domain, secure].join(''); 
} else { // only name given, get cookie 
var cookieValue = null; 
if (document.cookie && document.cookie != '') { 
var cookies = document.cookie.split(';'); 
for (var i = 0; i < cookies.length; i++) { 
var cookie = jQuery.trim(cookies[i]); 
// Does this cookie string begin with the name we want? 
if (cookie.substring(0, name.length + 1) == (name + '=')) { 
cookieValue = decodeURIComponent(cookie.substring(name.length + 1)); 
break; 
} 
} 
} 
return cookieValue; 
} 
};

<div id="latestp"></div> 
<script type="text/javascript"> 
var historyp; 
//最新访问的商品编号ID 
var nid="新商品编号ID"; 
//设置cookie保存的浏览记录的条数 
var N=10; 
var count=0; 
//判断是否存在cookie 
if($.cookie('smile1314h')==null) //cookie 不存在 
{ 
//创建新的cookie,保存浏览记录 
$.cookie('smile1314h',nid,{expires:7,path:'/'}); 
//$.cookie('smile1314h',nid,{expires:7,path:'/',domain:'smile1314.com',secure:true}); 
} 
else //cookies已经存在 
{ 
//获取浏览过的商品编号ID 
historyp=$.cookie('smile1314h'); 
var check_result = $('#latestp'); 
check_result.html('<img src=/CSS/Image/Loading.gif style=/"margin-left:40px;;/">'); 
//ajax 根据产品编号获取信息列表 
$.ajax({ //一个Ajax过程 
type: "get", 
url : "/Comm/getLatestProduct.ashx", 
dataType:'html', 
data: "P_Id="+historyp, 
success: function(json){ 
check_result.html(""); 
check_result.html(json); 
}}); 
//分解字符串为数组 
var pArray=historyp.split(','); 
//最新访问的商品编号放置载最前面 
historyp=nid; 
//判断是该商品编号是否存在于最近访问的记录里面 
for(var i=0;i<pArray.length;i++) 
{ 
if(pArray[i]!=nid) 
{ 
historyp=historyp+","+pArray[i]; 
count++; 
if(count==N-1) 
{ 
break; 
} 
} 
} 
//修改cookie的值 
$.cookie('smile1314h',historyp); 
} 
</script>

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