Jquery 最近浏览过的商品的功能实现代码

复制代码 代码如下:

/*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;
}
};

复制代码 代码如下:

<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>