前端实战——实现购物车功能

天猫实战——实现最全购物车功能

学习了一段时间前端,掌握了一些基本技能,只有进行实践操作,才能将自己学到的充分掌握。首页等一系列代码已经开源到github。
地址:https://github.com/qiaoj-ka
以下是对于购物车页面,以及一些交互。

页面展示

在这里插入图片描述
这是我完成之后的页面。

更多代码请在github上查看。https://github.com/qiaoj-ka

核心代码块

置顶导航

置顶导航使用纯CSS和HTML做的以及部分BootStrap。

       <!--	置顶导航-->
		<nav  class="top">
		<a href="#nowhere">
			<span class="glyphicon glyphicon-home redColor"></span>
			天猫首页
		</a>
		
		<span>瞄,欢迎来天猫</span>
		 	<a href="file:///C:/Users/%E8%A5%BF%E7%93%9C/Workspaces/MyEclipse%20CI/Tmall/TmallLogin.html">请登录</a>
			<a href="#nowhere">免费注册</a>
		
		<span class="pull-right">
			<a href="#nowhere">我的订单</a>
			<a href="file:///C:/Users/%E8%A5%BF%E7%93%9C/Workspaces/MyEclipse%20CI/Tmall/ShoppingCart.html">
			<span class=" glyphicon glyphicon-shopping-cart redColor" ></span>
            购物车<strong>2</strong></a>    
		</span>
	</nav>
	  <!--	CSS样式-->
<style>
	nav.top{
		background-color: #f2f2f2;
		padding-top: 5px;
		padding-bottom: 5px;
		border-bottom:1px solid  #e7e7e7;
	}
	nav.top span, nav.top a{
		color: #999;
		margin: 0px 10px 0px 10px;
	}
	nav.top a:hover{
		color: #C40000;
		text-decoration: none;
	}
</style>

产品列表

HTML部分

  <div class="cartTitle pull-right">
        <span>已选商品  (不含运费)</span>
        <span id="cartTitlePrice" class="cartTitlePrice">0.00</span>
        <button class="createOrderButton" style="background-color: rgb(170, 170, 170);" disabled="disabled">结 算</button>
    </div>
    <div class="cartProductList">
        <table class="cartProductTable">
            <thead>
                <tr>
                    <th class="selectAndImage">
                            <img src="http://how2j.cn/tmall/img/site/cartNotSelected.png" class="selectAllItem" selectit="false">                
                    全选
                    </th>
                    <th>商品信息</th>
                    <th>单价</th>
                    <th>数量</th>
                    <th width="120px">金额</th>
                    <th class="operation">操作</th>
                </tr>
            </thead>
            <tbody>
				
				<tr >
						<td>
							<div class="shopId"><img src="http://how2j.cn/tmall/img/site/cartNotSelected.png" class="selectAllItem" selectit="false">       
                    	<img src="https://ss2.bdstatic.com/8_V1bjqh_Q23odCf/pacific/1919701784.jpg" width="30" height="20">
							 <a href="#nowhere">店铺:华为官方旗舰店</a>
								
							</div>
						</td>
				</tr>
						
                    <tr class="cartProductItemTR" oiid="936">
                        <td>
                            <img src="http://how2j.cn/tmall/img/site/cartNotSelected.png" class="cartProductItemIfSelected" oiid="936" selectit="false">
                            <a href="#nowhere" style="display:none"><img src="http://how2j.cn/tmall/img/site/cartSelected.png"></a>
                            <img src="https://img.alicdn.com/bao/uploaded/i4/TB1yVcUNQPoK1RjSZKbytX1IXXa_112407.jpg_80x80.jpg" class="cartProductImg">
                        </td>
                        <td>
                            <div class="cartProductLinkOutDiv">
                                <a class="cartProductLink" href="#nowhere">12期免息】Huawei/华为P30 Pro曲面屏超感光徕卡四摄变焦双景录像980智能手机</a>
								<div>
									<img src="https://gw.alicdn.com/tfs/TB1XY8mheH2gK0jSZFEXXcqMpXa-63-16.png">
								</div>
                                <div class="cartProductLinkInnerDiv">
                                    <img title="支持信用卡支付" src="http://how2j.cn/tmall/img/site/creditcard.png">
                                    <img title="消费者保障服务,承诺7天退货" src="http://how2j.cn/tmall/img/site/7day.png">
                                    <img title="消费者保障服务,承诺如实描述" src="http://how2j.cn/tmall/img/site/promise.png">
                                </div>
                            </div>
                        </td>
                        <td>
                            <span class="cartProductItemPromotionPrice">4988.00</span>
                        </td>
                        <td>
                            <div class="cartProductChangeNumberDiv">
                                <span pid="365" class="hidden orderItemStock ">75</span>
                                <span pid="365" class="hidden orderItemPromotePrice ">5306.0</span>
                                <a href="#nowhere" class="numberMinus" pid="365">-</a>
                                <input value="1" autocomplete="off" class="orderItemNumberSetting" oiid="936" pid="365">
                                <a href="#nowhere" class="numberPlus" pid="365" stock="75">+</a>
                            </div>                    
                         </td>
                        <td>
                            <span pid="365" oiid="936" id="cartProductItemSmallSumPrice" class="cartProductItemSmallSumPrice">4988.00
                            </span>
                        </td>
                        <td>
                            <a href="#nowhere" oiid="936" class="deleteOrderItem">删除</a>
                        </td>
                    </tr>
                    <tr class="cartProductItemTR" oiid="935" style="background-color: rgb(255, 255, 255);">
                        <td>
                            <img src="http://how2j.cn/tmall/img/site/cartNotSelected.png" class="cartProductItemIfSelected" oiid="935" selectit="false">
                            <a href="#nowhere" style="display:none"><img src="http://how2j.cn/tmall/img/site/cartSelected.png"></a>
                            <img src="https://img.alicdn.com/bao/uploaded/i2/279470743/O1CN01UTTklQ1HMKmu9Xpuw_!!0-item_pic.jpg_80x80.jpg" class="cartProductImg">
                        </td>
                        <td>
                            <div class="cartProductLinkOutDiv">
                                <a class="cartProductLink" href="#nowhere">正版 C++游戏编程入门(4)c++游戏编程语言c语言编程教程 c++游戏编程从入门到精通 程序设计教材 计算机教材</a>
                                <div class="cartProductLinkInnerDiv">
                                    <img title="支持信用卡支付" src="http://how2j.cn/tmall/img/site/creditcard.png">
                                    <img title="消费者保障服务,承诺7天退货" src="http://how2j.cn/tmall/img/site/7day.png">
                                    <img title="消费者保障服务,承诺如实描述" src="http://how2j.cn/tmall/img/site/promise.png">
                                </div>
                            </div>
                        </td>
                        <td>
                            <span class="cartProductItemOringalPrice">59.48</span>
                            <span class="cartProductItemPromotionPrice">43.80</span>
                        </td>
                        <td>
                            <div class="cartProductChangeNumberDiv">
                                <span pid="809" class="hidden orderItemStock ">17</span>
                                <span pid="809" class="hidden orderItemPromotePrice ">152.75</span>
                                <a href="#nowhere" class="numberMinus" pid="809">-</a>
                                <input value="1" autocomplete="off" class="orderItemNumberSetting" oiid="935" pid="809">
                                <a href="#nowhere" class="numberPlus" pid="809" stock="17">+</a>
                            </div>                    
                         </td>
                        <td>
                            <span pid="809" oiid="935" id="cartProductItemSmallSumPrice" class="cartProductItemSmallSumPrice">152.75
                            </span>
                        </td>
                        <td>
                            <a href="#nowhere" oiid="935" class="deleteOrderItem">删除</a>
                        </td>
                    </tr>
            </tbody>
        </table>
    </div>
     <div class="cartFoot">
        <img src="http://how2j.cn/tmall/img/site/cartNotSelected.png" class="selectAllItem" selectit="false">
        <span>全选</span>
<!--         <a href="#">删除</a> -->
        <div class="pull-right">
            <span>已选商品 <span id="cartSumNumber" class="cartSumNumber">0</span></span>
            <span>合计 (不含运费): </span> 
            <span id="cartSumPrice" class="cartSumPrice">0.00</span>
            <button class="createOrderButton" style="background-color: rgb(170, 170, 170);" disabled="disabled">结  算</button>
        </div>
    </div>

CSS部分

在这里插入代码片

	img.cartProductItemIfSelected, img.selectAllItem {
		cursor: pointer;
	}
	tr.cartProductItemTR {
		border: 1px solid #CCCCCC;
	}
	div.cartProductChangeNumberDiv {
		border: solid 1px #E5E5E5;
		width: 80px;
	}
	table.cartProductTable {
		width: 100%;
		font-size:12px;
	}
	span.cartProductItemOringalPrice {
		text-decoration: line-through;
		color: #9C9C9C;
		display: block;
		font-weight: bold;
		font-size: 14px;
	}
	div.cartProductChangeNumberDiv input {
		border: solid 1px #AAAAAA;
		width: 42px;
		display: inline-block;
	}
	div.cartProductChangeNumberDiv a {
		text-decoration: none;
	}
	img.cartProductImg {
		padding: 1px;
		border: 1px solid #EEEEEE;
		width: 80px;
		height: 80px;
	}
	a.cartProductLink {
		color: #3C3C3C;
	}
	a.cartProductLink:hover {
		color: #C40000;
		text-decoration: underline;
	}
	div.cartProductLinkOutDiv {
		position: relative;
		height: 80px;
	}
	span.cartSumNumber {
		color: #C40000;
		font-weight: bold;
		font-size: 16px;
	}
	tr.cartProductItemTR td {
		padding: 20px 20px;
	}
	span.cartSumPrice {
		color: #C40000;
		font-weight: bold;
		font-size: 20px;
	}
	span.cartProductItemPromotionPrice {
		font-family: Arial;
		font-size: 14px;
		font-weight: bold;
		color: #C40000;
	}
	span.cartProductItemSmallSumPrice {
		font-family: Arial;
		font-size: 14px;
		font-weight: bold;
		color: #C40000;
	}
	span.cartTitlePrice {
		color: #C40000;
		font-size: 14px;
		font-weight: bold;
		margin-left: 5px;
		margin-right: 3px;
	}
	div.cartProductLinkInnerDiv {
		position: absolute;
		bottom: 0;
		height: 20px;
	}
	div.cartTitle button {
		background-color: #AAAAAA;
		border: 1px solid #AAAAAA;
		color: white;
		width: 53px;
		height: 25px;
		border-radius: 2px;
	}
	div.cartFoot {
		background-color: #E5E5E5;
		line-height: 50px;
		margin: 20px 0px;
		color: black;
		padding-left: 20px;
	}
	div.cartFoot button {
		background-color: #AAAAAA;
		border: 0px solid #AAAAAA;
		color: white;
		height: 100%;
		width: 120px;
		height: 50px;
		font-size: 20px;
		text-align: center;
	}
	table.cartProductTable th {
		font-weight: normal;
		color: #3C3C3C;
		padding: 20px 20px;
	}
	table.cartProductTable th.selectAndImage{
		width:200px;
	}
	table.cartProductTable th.operation{
		width:30px;
	}
	div.cartDiv {
		max-width: 1013px;
		margin: 10px auto;
		color: black;
	}

页脚

HTML部分


    <div class="footer" id="footer">
	<div class="copyright" id="copyright">
		<div class="white_link">
			<a href="#nowhere">关于天猫</a>
			<a href="#nowhere"> 帮助中心</a>
			<a href="#nowhere">开放平台</a>
			<a href="#nowhere">  诚聘英才</a>
			<a href="#nowhere">联系我们</a>
			<a href="#nowhere">网站合作</a>
			<a href="#nowhere">法律声明</a>
			<a href="#nowhere">知识产权</a>
			<a href="#nowhere">  廉正举报	</a>
		</div>
		<div class="white_link">
			<a href="#nowhere"> 阿里巴巴集团</a>
			<a href="#nowhere"> 淘宝网</a>
			<a href="#nowhere">天猫 </a>
			<a href="#nowhere">  聚划算</a>
			<a href="#nowhere">全球速卖通</a>
			<a href="#nowhere">阿里巴巴国际交易市场
			<a href="#nowhere">1688</a>
			<a href="#nowhere">阿里妈妈</a>
			<a href="#nowhere">  阿里旅行·去啊	</a>
			<a href="#nowhere">  阿里云计算	</a>
			<a href="#nowhere">  阿里通信 	</a>
			<a href="#nowhere">  YunOS	</a>
			<a href="#nowhere">  阿里旅行·去啊	</a>
			<a href="#nowhere">   万网	</a>
			<a href="#nowhere">  高德	</a>
			<a href="#nowhere">  来往	</a>
			<a href="#nowhere">  钉钉	</a>
			<a href="#nowhere">  支付宝 		</a>
		</div>
		<div class="license">
			<span>增值电信业务经营许可证:<span class="blod">B2-20110446</span> </span>
			<span>网络文化经营许可证:<span class="blod">浙网文[2015]0295-065</span> </span>
			<span>
			<img src="https://img.alicdn.com/tps/TB1yEqRPXXXXXXPXpXXXXXXXXXX-20-20.png" >
			<a href="#nowhere">-(经营性)-2017005</a>
		</span>
			<span>互联网医疗保健信息服务 审核同意书 浙卫网审【20146</span>
			<span>互联网药品信息服务资质证书编号:<a href="#nowhere">-(经营性)-2012-0005</a></span>
		
		    <div class="copyRightYear">© 2003-2016 TMALL.COM 版权所有</div>

		</div>
	</div>
</div>

CSS部分

div.footer{
	margin-top: 60px;
	
}
div.copyright a{
	margin-left: 9px;
	font-size: 11px;
	color: #686868;
}
div.white_link{
	padding-left: 20px;
    padding-bottom: 10px;
	}
div.license{
	color:#A4A4A4;
	margin-left: 29px;
	margin-right: 95px;
	color: #686868;
	font-size: 11px;
}
div.license span{
	margin-right: 40px;	
}
div.license span.blod{
	color: black;
	font-weight: bold;
}	

javascript的应用

其中用到了Jquery
我们需要提前导入

<script src="http://how2j.cn/study/js/jquery/2.0.0/jquery.min.js"></script>

为了实现动态的效果,也就是说当用户点击选择框,结算按钮那里的价格就会自动更新。大概就是以下的效果。

什么都不勾选时

在这里插入图片描述

当点击一个选择框时

在这里插入图片描述

当点击全选时

在这里插入图片描述
上下的全选按钮都得到了相应,并且价格和商品件数都会随之而改变。

数量的修改

通过两种方式对于数量进行修改。

  • 文本框
  • 点击“+” 、“-”
    在这里插入图片描述

实现代码

<script>
  $(function(){
	  //点击产品选择框
	  $("img.cartProductItemIfSelected").click(function(){
        var selectit = $(this).attr("selectit");
        if("selectit"==selectit){
            $(this).attr("src","http://how2j.cn/tmall/img/site/cartNotSelected.png");
            $(this).attr("selectit","false")
            $(this).parents("tr.cartProductItemTR").css("background-color","#fff");
			syncSelect();
			syncCreateOrderButton();
			removePrice();
        }
        else{
            $(this).attr("src","http://how2j.cn/tmall/img/site/cartSelected.png");
            $(this).attr("selectit","selectit")
            $(this).parents("tr.cartProductItemTR").css("background-color","#FFF8E1");
			syncSelect();
			syncCreateOrderButton();
			getPrice(); 
        }
    });
	  //点击全选选择框
	$("img.selectAllItem").click(function(){
		var selectit = $(this).attr("selectit");
		 if("selectit"==selectit){
             $("img.selectAllItem").attr("src","http://how2j.cn/tmall/img/site/cartNotSelected.png");
             $("img.selectAllItem").attr("selectit","false")
			 $("img.cartProductItemIfSelected").attr("src","http://how2j.cn/tmall/img/site/cartNotSelected.png");
			 $("img.cartProductItemIfSelected").attr("selectit","false");
			 $("img.cartProductItemIfSelected").parents("tr.cartProductItemTR").css("background-color","#fff");
			 removePrice();
            
        }
        else{
            $("img.selectAllItem").attr("src","http://how2j.cn/tmall/img/site/cartSelected.png");
            $("img.selectAllItem").attr("selectit","selectit");
            $("img.cartProductItemIfSelected").attr("src","http://how2j.cn/tmall/img/site/cartSelected.png");
			$("img.cartProductItemIfSelected").attr("selectit","selectit");
			$("img.cartProductItemIfSelected").parents("tr.cartProductItemTR").css("background-color","#FFF8E1");
			getPrice();
			
        }
	});
	  //键盘输入数量
	$(".orderItemNumberSetting").keyup(function(){
        var pid=$(this).attr("pid");
        var stock= $("span.orderItemStock[pid="+pid+"]").text();
        var price= $("span.orderItemPromotePrice[pid="+pid+"]").text();
        var num= $(".orderItemNumberSetting[pid="+pid+"]").val();
        num = parseInt(num);
        if(isNaN(num))
			{num= 1;
            }
        if(num<=0)
            num = 1;
        if(num>stock)
            num = stock;
		$(".orderItemNumberSetting[pid="+pid+"]").val(num);
		//改变金额
		price=convertNumber(price)*num;
		price=parseFloat(price).toFixed(2);
		$(".cartProductItemSmallSumPrice[pid="+pid+"]").html("¥"+price);
		getPrice();
    });
	  //点击+增加数量
	$(".numberPlus").click(function(){
		var pid=$(this).attr("pid");
        var stock= $("span.orderItemStock[pid="+pid+"]").text();
        var price= $("span.orderItemPromotePrice[pid="+pid+"]").text();
        var num= $(".orderItemNumberSetting[pid="+pid+"]").val();
		++num;
		$(".orderItemNumberSetting[pid="+pid+"]").val(num);
		price=convertNumber(price)*num;
		price=parseFloat(price).toFixed(2);
		$(".cartProductItemSmallSumPrice[pid="+pid+"]").html("¥"+price);
		getPrice();
	});
	  //点击-减少数量 
	 $(".numberMinus").click(function(){
		var pid=$(this).attr("pid");
        var stock= $("span.orderItemStock[pid="+pid+"]").text();
        var price= $("span.orderItemPromotePrice[pid="+pid+"]").text();
        var num= $(".orderItemNumberSetting[pid="+pid+"]").val();
		--num;
		 if(num==0)num=1;
		$(".orderItemNumberSetting[pid="+pid+"]").val(num);
		price=convertNumber(price)*num;
		price=parseFloat(price).toFixed(2);
		$(".cartProductItemSmallSumPrice[pid="+pid+"]").html("¥"+price);
		getPrice();
	 })
  });
 //全选函数
function syncSelect(){
    var selectAll = true;
    $(".cartProductItemIfSelected").each(function(){
        if("false"==$(this).attr("selectit")){
            selectAll = false;
        }
    });
    if(selectAll){
		$("img.selectAllItem").attr("src","http://how2j.cn/tmall/img/site/cartSelected.png");
	}

    else{
		$("img.selectAllItem").attr("src","http://how2j.cn/tmall/img/site/cartNotSelected.png");
	}
			
}

function syncCreateOrderButton(){
    var selectAny = false;
    $(".cartProductItemIfSelected").each(function(){
		
        if("selectit"==$(this).attr("selectit")){
            selectAny = true;
        }
    });
    if(selectAny){
        $("button.createOrderButton").css("background-color","#C40000");
        $("button.createOrderButton").removeAttr("disabled");
    }
    else{
        $("button.createOrderButton").css("background-color","#AAAAAA");
        $("button.createOrderButton").attr("disabled","disabled");      
    }
}
	//获取产品金额
function getPrice(){
	var price;
	var oiid;
	var sumPrice=0;
    var sumNum=0;
	$(".cartProductItemIfSelected").each(function(){
		if("selectit"==$(this).attr("selectit")){
			oiid=$(this).attr("oiid");
			pid=$(".orderItemNumberSetting[oiid="+oiid+"]").attr("pid");
			num=$(".orderItemNumberSetting[pid="+pid+"]").val();
			sumNum=parseInt(sumNum)+parseInt(num);
			if(isNaN(sumNum)){
				sumNum=1;
			}
	   		price=$(".cartProductItemSmallSumPrice[oiid="+oiid+"]").text();
			price=convertNumber(price);
			sumPrice=parseFloat(sumPrice)+parseFloat(price);
			sumPrice=parseFloat(sumPrice).toFixed(2);
			creatSumPrice(sumPrice,sumNum);
		}
	  })
 }								   

function convertNumber(price){
	price=price.replace(/\¥|\,/g,'');
	price=parseFloat(price).toFixed(2);
	return price;
}
//将计算后的金额数转化成页面展示的价格,也就是增加价格符号
function creatSumPrice(sumPrice,sumMumber){
	document.getElementById("cartSumPrice").innerHTML="¥"+sumPrice;
	document.getElementById("cartTitlePrice").innerHTML="¥"+sumPrice;
	document.getElementById("cartSumNumber").innerHTML=sumMumber;
	
}
//初始化价格
function removePrice(){
	document.getElementById("cartSumPrice").innerHTML="¥0.00";
	document.getElementById("cartTitlePrice").innerHTML="¥0.00";
	document.getElementById("cartSumNumber").innerHTML="0";
}
</script>

如有什么不明白欢迎大家留言。

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