//JS实现顾客浏览商品的记录以及实现购物车的功能
function setCookie(name,value){  var Days = 30;  var exp  = new Date();  exp.setTime(exp.getTime() + Days*24*60*60*1000);  //在最后追加  ;path=/ 非常有必要。否则容易出现   在不同的目录下，调用同一个js方法来存储Cookie，到别的目录取不出或取出的值是不对的这种情况  document.cookie = name + "="+ escape(value) +";expires="+ exp.toGMTString()+";path=/";   //name=value;时间}function getCookie(name){  var arr = document.cookie.match(new RegExp("(^| )"+name+"=([^;]*)(;|$)"));   // name= ;  if(arr != null){      alert("我是getCookie()方法："+unescape(arr[2]));      return unescape(arr[2]);  }  return null;}function delCookie(name){  var exp = new Date();  exp.setTime(exp.getTime() - 1);  var cval=getCookie(name);  if(cval!=null) document.cookie=name +"="+cval+";expires="+exp.toGMTString();}/** * 加入购物车，存入cookie */function goBuy(id, price){    var basePath = document.getElementById("basePath").getAttribute("value");    var newCookie = "";    var oldCookie = getCookie("product");    if(oldCookie) {        //如果已经存在在cookie中，则不再添加        if(inArray(oldCookie.split(","), id)) {            newCookie = oldCookie;        } else {            newCookie = id + "," + oldCookie;        }    } else {        newCookie = id;    }    setCookie("product", newCookie);    location.href = basePath+"servlet/CookieServlet?param=car&pid="+id;}/** * 浏览记录，存入cookie */function goView(id){    var basePath = document.getElementById("basePath").getAttribute("value");    var newCookie = "";    var oldCookie = getCookie("listView");    if(oldCookie) {        if(inArray(oldCookie.split(","), id)) {            newCookie = oldCookie;        } else {            newCookie = id + "," + oldCookie;        }    } else {        newCookie = id;    }    setCookie("listView", newCookie);    location.href = basePath+"servlet/CookieServlet?param=listView&pid="+id;}