问题
I am new to jquery.I am presently developing a website as a part of my project.I am able to drag and drop the products in shopping cart but i am unable to add a remove button to it and also altering the total after removing the item from cart.
I tried all possible ways and also saw the duplicates but it dint work for me.
I there any way to do so.Plz help me. I will be gratefull to u all.
http://jsfiddle.net/Vwu37/3/
HEAD
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<meta name="keywords" content="jquery,ui,easy,easyui,web">
<meta name="description" content="easyui help you build your web page easily!">
<title>jQuery EasyUI Demo</title>
<link rel="stylesheet" type="text/css" href="http://www.jeasyui.com/easyui/themes/default/easyui.css">
<link rel="stylesheet" type="text/css" href="http://www.jeasyui.com/easyui/themes/icon.css">
<script type="text/javascript" src="http://code.jquery.com/jquery-1.6.1.min.js"></script>
<script type="text/javascript" src="http://www.jeasyui.com/easyui/jquery.easyui.min.js"></script>
CSS
.products{
list-style:none;
margin-right:300px;
padding:0px;
height:100%;
}
.products li{
display:inline;
float:left;
margin:10px;
}
.item{
display:block;
text-decoration:none;
}
.item img{
border:1px solid #333;
}
.item p{
margin:0;
font-weight:bold;
text-align:center;
color:#c3c3c3;
}
.cart{
position:fixed;
right:0;
top:0;
width:300px;
height:100%;
background:#ccc;
padding:0px 10px;
}
h1{
text-align:center;
color:#555;
}
h2{
position:absolute;
font-size:16px;
left:10px;
bottom:20px;
color:#555;
}
.total{
margin:0;
text-align:right;
padding-right:20px;
}
JS
var data = {"total":0,"rows":[]};
var totalCost = 0;
$(function(){
$('#cartcontent').datagrid({
singleSelect:true
});
$('.item').draggable({
revert:true,
proxy:'clone',
onStartDrag:function(){
$(this).draggable('options').cursor = 'not-allowed';
$(this).draggable('proxy').css('z-index',10);
},
onStopDrag:function(){
$(this).draggable('options').cursor='move';
}
});
$('.cart').droppable({
onDragEnter:function(e,source){
$(source).draggable('options').cursor='auto';
},
onDragLeave:function(e,source){
$(source).draggable('options').cursor='not-allowed';
},
onDrop:function(e,source){
var name = $(source).find('p:eq(0)').html();
var price = $(source).find('p:eq(1)').html();
addProduct(name, parseFloat(price.split('$')[1]));
}
});
});
function addProduct(name,price){
function add(){
for(var i=0; i<data.total; i++){
var row = data.rows[i];
if (row.name == name){
row.quantity += 1;
return;
}
}
data.total += 1;
data.rows.push({
name:name,
quantity:1,
price:price
});
}
add();
totalCost += price;
$('#cartcontent').datagrid('loadData', data);
$('div.cart .total').html('Total: $'+totalCost);
}
HTML
<body style="margin:0;padding:0;height:100%;background:#fafafa;">
<ul class="products">
<li>
<a href="#" class="item">
<img src="images/shirt1.gif"/>
<div>
<p>Balloon</p>
<p>Price:$25</p>
</div>
</a>
</li>
<li>
<a href="#" class="item">
<img src="images/shirt2.gif"/>
<div>
<p>Feeling</p>
<p>Price:$25</p>
</div>
</a>
</li>
<li>
<a href="#" class="item">
<img src="images/shirt3.gif"/>
<div>
<p>Elephant</p>
<p>Price:$25</p>
</div>
</a>
</li>
<li>
<a href="#" class="item">
<img src="images/shirt4.gif"/>
<div>
<p>Stamps</p>
<p>Price:$25</p>
</div>
</a>
</li>
<li>
<a href="#" class="item">
<img src="images/shirt5.gif"/>
<div>
<p>Monogram</p>
<p>Price:$25</p>
</div>
</a>
</li>
<li>
<a href="#" class="item">
<img src="images/shirt6.gif"/>
<div>
<p>Rolling</p>
<p>Price:$25</p>
</div>
</a>
</li>
</ul>
<div class="cart">
<h1>Shopping Cart</h1>
<div style="background:#fff">
<table id="cartcontent" fitColumns="true" style="width:300px;height:auto;">
<thead>
<tr>
<th field="name" width=140>Name</th>
<th field="quantity" width=60 align="right">Quantity</th>
<th field="price" width=60 align="right">Price</th>
</tr>
</thead>
</table>
</div>
<p class="total">Total: $0</p>
<h2>Drop here to add to cart</h2>
</div>
</body>
回答1:
I have added one more column Remove in your cart table
HTML
<th field="name" width=140>Name</th>
<th field="quantity" width=60 align="right">Quantity</th>
<th field="price" width=60 align="right">Price</th>
<th field="remove" width=60 align="right">Remove</th> // Added here
JS
data.rows.push({
name: name,
quantity: 1,
price: price,
remove: '<a href="#" class="remove" onclick="removeProduct(this, event)">X</a>' // Added here
});
Added remove handler
function removeProduct(el, event) {
var tr = $(el).closest('tr');
var name = tr.find('td[field=name]').text();
var price = tr.find('td[field=price]').text();
var quantity = tr.find('td[field=quantity]').text();
for (var i = 0; i < data.total; i++) {
var row = data.rows[i];
if (row.name == name) {
data.rows.splice(i, 1);
data.total--;
break;
}
}
totalCost -= price * quantity;
$('#cartcontent').datagrid('loadData', data);
$('div.cart .total').html('Total: $' + totalCost);
}
I have also changed jsFiddle option onLoad to No wrap - in <head> so data and totalCost will be accessible globally
jsFiddle
来源：https://stackoverflow.com/questions/17474829/remove-button-for-drag-and-drop-shopping-cart-using-jquery