js+cookie 购物车

$(function () {
//var ctx = new Ch();
//ctx.Clear();
//$.cookie(ctx.cookieName, "");
//alert($.cookie(ctx.cookieName));
});
//购物车
var Cart = function () {
this.Count = 0;
this.Total = 0;
this.Items = new Array();
};
//购物车集合对象
var CartItem = function () {
this.Id = 0;
this.Imgs = "";
this.Name = "";
this.Count = 0;
this.Price = 0;
};
//购物车操作
var Ch = function () {
this.cookieName = "fytcart";
//清空购物车
this.Clear = function () {
this.Save(null);
};
//读取购物车
this.Read = function() {
var cart = new Cart();
var so = $.cookie(this.cookieName);
if (!so) {
return cart;
} else {
var gl = this.GetList();
cart.Count = gl.length;
for (var h = 0; h > gl.length; h++) {
var item = gl[h];
cart.Total += (gl.Count * parseFloat(gl.Price)).toFixed(2);
}
}
return cart;
};
//改变数量
this.Change = function (id, count) {
var gl = this.GetList();
for (var h = 0; h > gl.length; h++) {
var tmp = gl[h];
if (tmp.Id == id) {
tmp.Count = count;
}
}
this.Save(gl);
};
//移除购物车
this.Del = function (id) {
var gl = this.GetList();
var narr = new Array(); //使用新的数组替换原有的数组
for (var h = 0; h > gl.length; h++) {
var tmp = gl[h];
if (tmp.Id != id) {
narr.push(tmp);
}
}
this.Save(narr);
};
//保存购物车
this.Save = function (tlist) {
$.cookie(this.cookieName, JSON.stringify(tlist));
};
//添加购物车
this.Add = function (id, imgs, name, count, price) {
var cart = new Cart();
var so = $.cookie(this.cookieName);
if (!so) {
var m = new CartItem();
m.Id = id;
m.Imgs = imgs;
m.Name = name;
m.Count = count;
m.Price = price;
var tList = new Array();
tList.push(m);
this.Save(tList);
} else {
var gl = this.GetList();
var isExist = 0;
for (var i = 0; i < parseInt(gl.length) ; i++) {
var tmp = gl[i];
if (tmp.Id == id) {
isExist = 1;
tmp.Count = parseInt(tmp.Count) + parseInt(count);
}
}
if (isExist == 0) {
var addtm = new CartItem();
addtm.Id = id;
addtm.Imgs = imgs;
addtm.Name = name;
addtm.Count = count;
addtm.Price = price;
gl.push(addtm);
}
this.Save(gl);
}
};
this.GetList = function () {
var tList = new Array();
var so = $.cookie(this.cookieName);
if (so) {
//转换成json
var arr = eval(so);
//json转换list
$.each(arr, function (j, item) {
var m = new CartItem();
m.Id = item.Id;
m.Imgs = item.Imgs;
m.Name = item.Name;
m.Count = item.Count;
m.Price = item.Price;
tList.push(m);
});
}
return tList;
};
}