简单的前端js+ajax 购物车框架(入门篇)

其实，一直想把自己写的一些js给总结下，也许是能力有限不能把它完美结合起来。只能自己默默的看着哪些代码，无能为力。

今天在公司实在没有事做，突然就想到写下商城的购物车的前端框架，当然我这里只有购物车的增删改查，也许写的并不是那么完善，但最重要的是一个入门，也希望js达人给些建议，好让我更上一个台阶。

HOHO~~~开始咯：

Js：

//为了省事，就没写自己的js ajax了 用了jquery的，当然你也可以添加到jquery的扩展方法内,哈哈，我太懒了，所以就写这里了。

var _$ = { AJAX: function (urlparm, d, beforecall, successcall) {

$.ajax({

url: "ashx/ajax_shoppingCart.ashx?" + urlparm,

data:d,

dataType:"Json",

type: "POST",

before: beforecall,

success:successcall

});

}

};

(function () {

var Jusoc = {};

Jusoc = {

_inital: function () { window.Jusoc = Jusoc; },

Base: {},

DAO: {},

BLL: {},

UI: {}

}

Jusoc.Base = {

Validate: {

}

}

//AJAX()

Jusoc.DAO = {

Shopping: {

Get: function (beforecall, successcall) {

_$.AJAX("action=get", null, beforecall, successcall);

},

Remove: function (pid, beforecall, successcall) {

_$.AJAX("action=remove", { "pid": pid }, beforecall, successcall);

},

Add: function (pid, pcount, beforecall, successcall) {

_$.AJAX("action=add", { "pid": pid, "pcount": pcount }, beforecall, successcall);

},

Set: function (pid, pcount, beforecall, successcall) {

_$.AJAX("action=set", { "pid": pid, "pcount": pcount }, beforecall, successcall);

}

}

}

Jusoc.BLL = {

Shopping: (function () {

var Data = null;

var isLock = false;

var _successcall = null;

var _beforecall = null;

function Unlock() {

isLock = false;

}

function Lock() {

isLock = true;

if(Data&&Data !=null)

{

Data = null;

}

}

function CallBackFunction(xhr) {

Unlock();

//            if (xhr[0] == "ERROR") {

//                alert(xhr[1]);

//                return;

//            }

//            else if (xhr[0] == "SUCCESS") {

//                Jusoc.BLL.Shopping.SetData(xhr[1]);

//            }

Jusoc.BLL.Shopping.SetData(xhr);

if (_successcall != null && _successcall) {

_successcall.call(window, xhr);

}

_successcall = null;

}

function PrepareRequst(beforecall, successcall) {

if (isLock) {

return false;

}

Lock();

if (beforecall != null && beforecall) {

_beforecall = beforecall;

}

if (successcall != null && successcall) {

_successcall = successcall;

}

}

return {

Get: function (beforecall, successcall) {

if(PrepareRequst(beforecall, successcall)==false)return false;

Jusoc.DAO.Shopping.Get(_beforecall, CallBackFunction);

},

Remove: function (pid, beforecall, successcall) {

if(PrepareRequst(beforecall, successcall)==false)return false;

Jusoc.DAO.Shopping.Remove(pid, _beforecall, CallBackFunction);

},

Set: function (pid, pcount, beforecall, successcall) {

if(PrepareRequst(beforecall, successcall)==false)return false;

Jusoc.DAO.Shopping.Set(pid, pcount, beforecall, CallBackFunction);

},

Add: function (pid, pcount, beforecall, successcall) {

if(PrepareRequst(beforecall, successcall)==false)return false;

Jusoc.DAO.Shopping.Add(pid, pcount, _beforecall, CallBackFunction);

},

GetData: function () {

//alert(Data);

return Data;

},

SetData: function (data) { Data = data; },

RemoveData: function () {

if (Data != null && Data)

Data= null;

}

}

})(),

XHR: {

}

}

Jusoc.UI = {

ShoppingCart: (function () {

function Constract() {

Jusoc.BLL.Shopping.Get(null,SetShoppingCart);

}

function SetShoppingCart(data) {

//这里来填充购物车中的数据

var data = Jusoc.BLL.Shopping.GetData();

//这里 先构建 整个的购物车

var html = "<table class=\"shoppingcart-list\" id=\"sm\">"+

"<tr>"+

"<th>"+

"书啊"+

"</th>"+

"<th>"+

"书名"+

"</th>"+

"<th>"+

"  单价"+

"</th>"+

"<th>"+

"   数量"+

"</th>"+

"<th>"+

"   操作"+

"</th>"+

"</tr>";

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

{

html += "<tr>"+

"<td>"+

"<img src=\"ss\" height=\"36px\" width=\"28px\"/>"+

"</td>"+

"<td>"+

data[i].Name+

"</td>"+

"<td>"+

"￥"+data[i].Money+

"</td>"+

"<td>"+

"<div class=\"item-change\">"+

"<input type=\"text\" value='"+data[i].Count+"' />"+

"<span title=\"数量加一\" class=\"add\" onclick=\"Jusoc.UI.ShoppingCart.Plus(1,this.parentNode.childNodes[0].value,this.parentNode.childNodes[0])\"></span> <span "+

"title=\"数量减一\" class=\"cut\" onclick=\"Jusoc.UI.ShoppingCart.Minus(1,this.parentNode.childNodes[0].value,this.parentNode.childNodes[0])\"></span>"+

"</div>"+

"</td>"+

"<td>"+

"<span class=\"RemoveLink\" onclick=\"Jusoc.UI.ShoppingCart.Remove(1,this.parentNode.parentNode)\">Remove From Cark</span>"+

"</td>"+

"</tr>";

}

html+="</table>";

document.body.innerHTML+=html;

}

function AddToPanel(data) {

//这里是对 添加一个商品到购物车 来修改前台样式

var obj = document.getElementById("sm");

var html =   "<td>"+

"<img src=\"soo\" height=\"36px\" width=\"28px\"/>"+

"</td>"+

"<td>"+

data.Name+

"</td>"+

"<td>"+

"￥"+data.Money+

"</td>"+

"<td >"+

"<div class=\"item-change\">"+

"<input type=\"text\" value='"+data.Count+"' />"+

"<span title=\"数量加一\" class=\"add\" onclick=\"Jusoc.UI.ShoppingCart.Plus(1,this.parentNode.childNodes[0].value,this.parentNode.childNodes[0])\"></span> <span "+

"title=\"数量减一\" class=\"cut\" onclick=\"Jusoc.UI.ShoppingCart.Minus(1,this.parentNode.childNodes[0].value,this.parentNode.childNodes[0])\"></span>"+

"</div>"+

"</td>"+

"<td>"+

"<span class=\"RemoveLink\" onclick=\"Jusoc.UI.ShoppingCart.Remove(1,this.parentNode.parentNode)\">Remove From Cark</span>"+

"</td>";

var row = obj.insertRow(1);

row.innerHTML = html;

return;

obj.childNodes[0].innerHTML += html;

}

function UpdatePanel(obj, count) {

//这里是从购物车中 增加 或者 减少 修改操作

obj.value = count;

}

function RemoveFromPanel(child)

{

var obj = document.getElementById("sm");

obj.childNodes[0].removeChild(child);

}

return {

PageLoad: function () {

Constract();

},

Add: function (pid, pcount) {

Jusoc.BLL.Shopping.Add(pid,pcount, null, AddToPanel);

},

Plus: function (pid, pcount, obj) {

pcount = parseInt(pcount) + 1;

Jusoc.BLL.Shopping.Set(pid, pcount, function () { alert("before") }, function (data) { UpdatePanel(obj, pcount) });

},

Minus:function(pid,pcount,obj){

pcount = parseInt(pcount) - 1;

Jusoc.BLL.Shopping.Set(pid,pcount,null,function(data){ UpdatePanel(obj,pcount)});

},

Remove:function(pid,obj){

Jusoc.BLL.Shopping.Remove(pid,null,function(data){ RemoveFromPanel(obj);});

}

}

})()

}

Jusoc._inital();

})()

view sourceprint?

<BR>

　　Tips:这里的显示页面仅仅是demo，如需要，可以自己定制。

　　HTML：

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">

<head>

<title></title>

<style type="text/css">

*{margin:0; padding:0;border:0}

body{font-size: .85em;font-family: Verdana,Helvetica,SimSun,Arial, "Arial Unicode MS" ,MingLiu,PMingLiu, "MS Gothic" ,sans-serief;color: #232323;text-align:center;  font-size:12px;  background-color: #fff;}

#ltRight {width: 722px;float: left;position: relative;padding: 16px 40px;text-align:left}

/*shoppingcart-list*/

.shoppingcart-list{border: 1px solid #C2D8ED;border-collapse: collapse;color: #666666;width: 750px;}

.shoppingcart-list th{background-color: #F1F7F9;color: #666;font-size: 13px;text-align: center;}

.shoppingcart-list tr{border: 1px solid #C2D8ED;line-height: 25px;text-align:center;}

.shoppingcart-list tr:hover{background-color: #fff;}

th, td{padding-left: 5px;}

.item-change{font: 12px/74px Arial;text-align: center;width: 58px;padding: 28px 0 0 25px;height: 46px;}

.item-change input{width: 36px;height: 19px;border: 1px solid #C4C4C4;background: white;float: left;margin-top: 1px;text-align: center;line-height: 19px;margin-right: 1px;font-size: 12px;}

.item-change span{width: 17px;height: 8px;float: left;display: block;margin-top: 1px;font-size: 0;line-height: 0;border: 1px solid #C9C9C9;text-indent: -9999px; cursor:pointer}

.item-change .add{background: url(Images/leftmenu/icon_cart.gif) no-repeat 6px -58px;}

.item-change .cut{background: url(Images/leftmenu/icon_cart.gif) no-repeat 6px -67px;}

.box_window {width: 204px;position:absolute;left:-9999px;}

.box_window .updateTip{width: 184px;border: solid 1px #DFC9B2;background-color: #FDF2E3;line-height: 20px;padding: 11px 8px 8px;}

.t_c {text-align: center;}

.c_red_s {color: #C30;font-weight: bold;}

.box_window .c_b {width: 9px;height: 6px;margin: 0 auto;background: url(Images/leftmenu/p_window_b.gif) no-repeat;position: relative;margin-top: -1px;font-size: 0;overflow: hidden;}

.RemoveLink{ cursor:pointer}

</style>

<script src="../js/jquery-1.6.js" type="text/javascript"></script>

<script src="Js/base.Jusoc.js" type="text/javascript"></script>

<script type="text/javascript">

window.onload =function () {

Jusoc.UI.ShoppingCart.PageLoad();

}

</script>

</head>

<body>

<div id="ltRight">

<h5 class="htitle">

购物车

<span style="float:right; padding-right:20px;">总金额：￥<em id="cart-total"></em></span>

</h5>

<div id="update-message" style="text-align: left; text-indent: 48px; font-weight: bold;

padding: 6px;">

</div>

<div id="item-tip" class="box_window">

<div class="updateTip">

<p class="t_c">

修改成功！</p>

<p>

您的商品总金额为￥<span class="c_red_s" id="update_total_account">@Model.Total.ToString("0.00")</span> 元</p>

<p class="t_c">

<a href="javascript:void(0)" onclick="$('#item-tip').css('left','-9999px');">关闭</a></p>

</div>

<div class="c_b">

</div>

</div>

<h5><a href="javascript:Jusoc.UI.ShoppingCart.Add(1,1)">Add one to Shopping Cart</a></h5>

</div>

</body>

</html>

<BR>

　　

ashx：这个我就不就木有必要黏贴出来了，根据自己的业务去写额。

总结：OK,搞定！

作者：欧西

原文转载：http://www.2cto.com/kf/201110/109465.html