AJAX实现的购物车，使用Cookie保存。 - 嘻哈呵嘿

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AJAX实现的购物车，使用Cookie保存。

[ASPX]

<%@ Page Language="C#" MasterPageFile="~/Scripts/ShopCart/ShopCart.master" AutoEventWireup="true"

CodeFile="Default.aspx.cs" Inherits="_Default" Title="购物车" %>

<%@ Import Namespace="AW.Components.Helpers" %>

<asp:Content ID="Content1" ContentPlaceHolderID="ContentPlaceHolder1" runat="Server">

<asp:MultiView ID="MultiView1" runat="server">

<asp:View ID="View1" runat="server">

var key = '<%= Key %>';

function remove(pID){

var v = getCookie(key)==null?"":getCookie(key);

_Default.RemoveProductFromOrder(pID,v,remove_Callback);

}

function remove_Callback(res){

if(res.error!=null)alert(res.error);

else{

var tr = document.getElementById("tr_" + res.value.PID.toString());

tr.style.display = "none";

deleteCookie(key,"/","." + location.host);

setCookie(key,res.value.NVC,null,"/","."+location.host);

calcMoney();

}

function modify(pID,num){

var v = getCookie(key)==null?"":getCookie(key);

_Default.ModifyProductNumber(pID,num,v,modify_Callback);

}

function modify_Callback(res){

deleteCookie(key,"/","." + location.host);

setCookie(key,res.value.NVC,null,"/","."+location.host);

var total = document.getElementById("txtSubTotal_" + res.value.PID.toString());

var price = document.getElementById("txtVipPrice_" + res.value.PID.toString());

total.value = Round(parseFloat(parseInt(res.value.TOTAL) * parseFloat(price.value)),2);

calcMoney();

}

function modifyAll(){

}

function clearCart(){

if (!confirm('确定要清空购物车吗？')) return;

var tb = document.getElementById("tbOrder");

for(var i=1;i<tb.rows.length;i++){

var tr = tb.rows.item(i);

if(tr.id.indexOf("_")!=-1 && tr.style.display!="none"){

tr.style.display = 'none';

}

deleteCookie(key,"/","." + location.host);

var ctlTotalNum = document.getElementById("<%=lbTotalNum.ClientID %>");

var ctlTotalMoney = document.getElementById("<%=lbTotalMoney.ClientID %>");

var ctlDiscount = document.getElementById("<%=lbDiscount.ClientID %>");

ctlTotalNum.innerHTML = "0";

ctlTotalMoney.innerHTML = "0";

ctlDiscount.innerHTML = "0";

}

function calcMoney(){

var ctlNums = document.getElementsByName("txtNumber");

var ctlPrices = document.getElementsByName("txtPrice");

var ctlVipPrices = document.getElementsByName("txtVipPrice");

var ctlSubTotal = document.getElementsByName("txtSubTotal");

var ctlTotalNum = document.getElementById("<%=lbTotalNum.ClientID %>");

var ctlTotalMoney = document.getElementById("<%=lbTotalMoney.ClientID %>");

var ctlDiscount = document.getElementById("<%=lbDiscount.ClientID %>");

var totalNum = 0;

var subTotal = 0;

var subTotalVip = 0;

var totalMoney = 0;

var totalVipMoney = 0;

for(var i=0;i<ctlNums.length;i++){

totalNum += parseInt(ctlNums[i].value);

subTotal = parseFloat(totalNum * parseFloat(ctlPrices[i].value));

subTotalVip = parseFloat(totalNum * parseFloat(ctlVipPrices[i].value));

totalMoney += subTotal;

totalVipMoney += subTotalVip;

ctlSubTotal.value = subTotalVip.toString();

}

ctlTotalNum.innerHTML = Round(totalNum,2);

ctlTotalMoney.innerHTML = Round(totalVipMoney,2);

ctlDiscount.innerHTML = Round((totalMoney - totalVipMoney),2);

}

function Round(a_Num , a_Bit){

return (Math.round(a_Num * Math.pow (10 , a_Bit)) / Math.pow(10 , a_Bit)).toString() ;

}

</script>

<tbody>

<tr>

<td>

</tr>

</tbody>

</table>

<table class="meun_bg" cellspacing="0" cellpadding="0" width="540" align="center"

border="0">

<tbody>

<tr>

<td>

<td>

<td>

<td>

</tr>

</tbody>

</table>

<table cellspacing="0" cellpadding="0" width="778" align="center" bgcolor="#fafafa"

border="0">

<tbody>

<tr>

<td>

</tr>

<tr>

<td>

<tbody>

<td>

</tr>

<tbody>

<td>

商品名称</td>

<td>

单位</td>

<td>

数量</td>

<td>

市场价（元）</td>

<td>

会员价（元）</td>

<td>

小计（元）</td>

操作</td>

</tr>

<asp:Repeater ID="rptView" runat="server">

<asp:HyperLink Target="_blank" NavigateUrl='<%# "~/" + ((ORDERDETAIL)Container.DataItem).Product.ChannelID.ToString() + "_" + ((ORDERDETAIL)Container.DataItem).Product.ID.ToString() + ".aspx" %>'

Text='<%# ((ORDERDETAIL)Container.DataItem).Product.Name %>' runat="server" /></td>

<td>

<%# String.IsNullOrEmpty(((ORDERDETAIL)Container.DataItem).Product.Unit) ? "个" : ((ORDERDETAIL)Container.DataItem).Product.Unit %>

</td>

<td>

<input style="text-align: right;" onbeforepaste="clipboarddata.setdata('text',clipboarddata.getdata('text').replace(/[^\d]/g,''))"

id="txtNum_<%# ((ORDERDETAIL)Container.DataItem).Product.ID %>" onkeyup="value=value.replace(/[^\d]/g,'');"

onblur="if(this.value.length==0)this.value=0;modify(<%# ((ORDERDETAIL)Container.DataItem).Product.ID %>,value);"

maxlength="2" size="4" value="<%# ((ORDERDETAIL)Container.DataItem).Number %>"

name="txtNumber" /></td>

<del>

<%# ((ORDERDETAIL)Container.DataItem).Product.Price %>

</del>

<input name='txtPrice' id="txtPrice_<%# ((ORDERDETAIL)Container.DataItem).Product.ID %>"

type="hidden" value='<%# ((ORDERDETAIL)Container.DataItem).Product.Price %>' />

</td>

<input style="text-align: right;" name='txtVipPrice' id="txtVipPrice_<%# ((ORDERDETAIL)Container.DataItem).Product.ID %>"

type="hidden" value='<%# ((ORDERDETAIL)Container.DataItem).Product.VipPrice %>' />

<%# ((ORDERDETAIL)Container.DataItem).Product.VipPrice %>

</td>

<input style="text-align: right;border: none 0px white; background-color: White;" size="4" name='txtSubTotal' id="txtSubTotal_<%# ((ORDERDETAIL)Container.DataItem).Product.ID %>"

type="text" readonly="readonly" value='<%# ((ORDERDETAIL)Container.DataItem).Product.VipPrice * ((ORDERDETAIL)Container.DataItem).Number %>' /></td>

<td>

<a href="javascript:remove(<%# ((ORDERDETAIL)Container.DataItem).Product.ID %>);"><font

color="#ff0000">删除</font></a></td>

</tr>

</ItemTemplate>

</asp:Repeater>

购物车中共有

<asp:Label ID="lbTotalNum" ForeColor="red" runat="server" />

件商品，共计 <font class="font_red">￥<asp:Label ID="lbTotalMoney" runat="server" />

元</font>（不包括邮费）  您节省了<font class="font_red">￥<asp:Label ID="lbDiscount" runat="server" /></font>

</td>

</tr>

<img style="width: 104px; height: 27px; cursor: pointer;" onclick="modifyAll();"

height="23" alt="单击这里保存您所修改的商品数量" width="85" src="../../Icon/ShopCart/shopc_13_02.gif"

border="0" />

<img style="cursor: pointer" onclick="clearCart();" height="27" alt="单击这里清空所有购买的商品"

src="../../Icon/ShopCart/shopc_13_03.gif" width="104" /> </td>

</tr>

</tbody>

</table>

</td>

</tr>

<td>

</tr>

</tbody>

</table>

</td>

</tr>

<tr>

<img style="cursor: hand" onclick="javascript:window.close();" height="42" alt="点击继续购买您喜欢的其它商品"

src="../../Icon/ShopCart/shopc_13_01.gif" width="143" vspace="10" />   

<img style="cursor: hand" onclick="location.href='./ClientInfo.aspx';" height="42"

alt="点击去收银台结帐" hspace="10" src="../../Icon/ShopCart/shopc_13.gif" width="143"

vspace="10" id="IMG1" /></td>

</tr>

<tr>

</td>

</tr>

</tbody>

<tr>

<td>

</td>

</tr>

</table>

</div>

</asp:View>

</asp:MultiView>

<br />

</asp:Content>

[CS]

using System;

using System.Data;

using System.Configuration;

using System.Collections;

using System.Web;

using System.Web.Security;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Web.UI.WebControls.WebParts;

using System.Web.UI.HtmlControls;

using AW.Components;

using AjaxPro;

using System.Collections.Generic;

using System.Collections.Specialized;

using System.Text;

using AW.Components.Helpers;

public partial class _Default : System.Web.UI.Page {

protected string Key = "ORDERDETAIL_" + CContext.Current.SiteOwnerUserID.ToString();

protected void Page_Load(object sender, EventArgs e) {

Utility.RegisterTypeForAjax(typeof(_Default));

string action = Request["Act"];

int id;

if (string.IsNullOrEmpty(action))

action = "list";

if (int.TryParse(Request["ID"], out id)) {

if (action == "add") {

CProduct prodcut = CProducts.GetProduct(id, CContext.Current.SiteOwnerUserID);

if (prodcut == null) {

CJS.AlertAndGoUrl("此商品已经被删除！", Request.Url.AbsolutePath);

return;

}

AddProductToOrder(id, 1);

Response.Redirect(Request.Url.AbsolutePath, true);

return;

}

rptView.DataSource = GetOrders();

rptView.DataBind();

MultiView1.ActiveViewIndex = 0;

}

public List<ORDERDETAIL> GetOrders() {

HttpCookie cookie;

cookie = Request.Cookies[Key] == null ? new HttpCookie(Key) : Request.Cookies[Key];

NameValueCollection nvc = CHttpHelper.Base64Decode(cookie.Value);

List<ORDERDETAIL> orders = new List<ORDERDETAIL>();

int totalNum = 0;

double totalMoney = 0.00;

double totalVipMoney = 0.00;

for (int i = 0; i < nvc.Count; i++) {

ORDERDETAIL ord = new ORDERDETAIL(int.Parse(nvc.Keys[i]), int.Parse(nvc[i]));

orders.Add(ord);

totalNum += int.Parse(nvc[i]);

totalMoney += (ord.Number * (ord.Product==null?0:ord.Product.Price));

totalVipMoney += (ord.Number * (ord.Product==null?0:ord.Product.VipPrice));

}

lbTotalNum.Text = totalNum.ToString();

lbTotalMoney.Text = totalVipMoney.ToString("0.00");

lbDiscount.Text = (totalMoney - totalVipMoney).ToString("0.00");

return orders;

}

public void AddProductToOrder(int pID, int num) {

HttpCookie cookie;

cookie = Request.Cookies[Key] == null ? new HttpCookie(Key) : Request.Cookies[Key];

cookie.Path = Request.ApplicationPath;

cookie.Domain = "." + Request.Url.Host;

NameValueCollection nvc = CHttpHelper.Base64Decode(cookie.Value);

if (nvc[pID.ToString()] != null)

nvc[pID.ToString()] = (int.Parse(nvc[pID.ToString()]) + num).ToString();

else

nvc.Add(pID.ToString(), num.ToString());

cookie.Value = CHttpHelper.Base64Encode(nvc);

Response.AppendCookie(cookie);

}

[AjaxMethod]

public RESUTLINFO ModifyProductNumber(int pID, int num, string cookieStr) {

NameValueCollection nvc = CHttpHelper.Base64Decode(cookieStr);

nvc[pID.ToString()] = num.ToString();

return new RESUTLINFO(pID, int.Parse(nvc[pID.ToString()]),CHttpHelper.Base64Encode(nvc));

}

[AjaxMethod]

public RESUTLINFO RemoveProductFromOrder(int pID, string cookieStr) {

NameValueCollection nvc = CHttpHelper.Base64Decode(cookieStr);

nvc.Remove(pID.ToString());

return new RESUTLINFO(pID, CHttpHelper.Base64Encode(nvc));

}

[CHttpHeler]

using System;

using System.Collections.Generic;

using System.Text;

using System.Collections.Specialized;

using System.Web;

namespace AW.Components.Helpers {

public class CHttpHelper {

private CHttpHelper() { }

GetString

public static string Base64Encode(NameValueCollection nvc) {

return Convert.ToBase64String(Encoding.Default.GetBytes(GetString(nvc)), Base64FormattingOptions.None);

}

public static NameValueCollection Base64Decode(string base64String) {

if (string.IsNullOrEmpty(base64String))

return new NameValueCollection();

return HttpUtility.ParseQueryString(GetString(HttpUtility.UrlDecode(base64String)));

}

public struct ORDERDETAIL {

public ORDERDETAIL(int pID, int num) {

Product = CProducts.GetProduct(pID, CContext.Current.SiteOwnerUserID);

Number = num;

}

public CProduct Product;

public int Number;

public void ParseFromString(string str) {

}

public int ProudctID {

get {

return Product == null ? 0 : Product.ID;

}

public override string ToString() {

return ProudctID + ":" + Number.ToString();

}

public struct RESUTLINFO {

public string NVC;

public int PID;

public int TOTAL;

public RESUTLINFO(int pID, string nvc) {

PID = pID;

NVC = nvc;

TOTAL = 0;

}

public RESUTLINFO(int pID, int total, string nvc) {

PID = pID;

NVC = nvc;

TOTAL = total;

}

演示：http://clover.dollarscn.com/scripts/shopcart/?act=add&id=1102 :)

posted on 2005-12-03 18:27 嘻哈呵嘿阅读(1823) 评论(0) 编辑收藏举报

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