基于JavaScript实现动态购物车效果及源码解析

<a href="#0" class="btn btn-success add-button" data-price="3669.00" data-proid="1" data-proname="华为P9" data-proimg="img/huawei_p9.jpg">添加到购物车</a>

<div class="cd-cart-container empty"> 
<a href="#0" class="cd-cart-trigger"> 
购物车 
<ul class="count"> <!-- cart items count --> 
<li>0</li> 
<li>0</li> 
</ul> 
</a> 
<div class="cd-cart"> 
<div class="wrapper"> 
<header> 
<h2>购物车</h2> 
<span class="undo">已删除 <a href="#0">恢复</a></span> 
</header> 
<div class="body"> 
<ul> 
<!-- 此部分是购物车商品部分，由javascript动态插入 --> 
</ul> 
</div> 
<footer> 
<a href="#0" class="checkout"><em>结算 - ￥<span>0</span></em></a> 
</footer> 
</div> 
</div> 
</div>

<div class="body"> 
<ul> 
<li class="product"> 
<div class="product-image"> 
<a href="#0"><img src="img/pro.jpg" alt="placeholder"></a> 
</div> 
<div class="product-details"> 
<h3><a href="#0">商品名称</a></h3> 
<span class="price">￥3999.99</span> 
<div class="actions"> 
<a href="#0" class="delete-item">删除</a> 
<div class="quantity"> 
<label for="cd-product-'+ productId +'">件数</label> 
<span class="select"> 
<span class="select">x<i id="cd-product-'+proid+'">1</i></span> 
</span> 
</div> 
</div> 
</div> 
</li> 
</ul> 
</div>

function addProduct(proname,proid,price,proimg) { 
var quantity = $("#cd-product-"+proid).text(); 
var select='',productAdded=''; 
if(quantity==''){ 
var select = '<span class="select">x<i id="cd-product-'+proid+'">1</i></span>'; 
var productAdded = $('<li class="product"><div class="product-image"><a href="#0"><img src="'+proimg+'" alt="placeholder"></a></div><div class="product-details"><h3><a href="#0">'+proname+'</a></h3><span class="price">￥'+price+'</span><div class="actions"><a href="#0" class="delete-item">删除</a><div class="quantity"><label for="cd-product-'+ proid +'">件数</label>'+select+'</div></div></div></li>'); 
cartList.prepend(productAdded); 
}else{ 
quantity = parseInt(quantity); 
$("#cd-product-"+proid).html(quantity+1); 
} 
}