我正在用jsp，servlet做一个实时网站。我正在尝试通过添加到购物车来出售图书。单击添加到购物车链接时，仅添加书1。在单击添加到Book2的购物车链接时，仅在购物车Book 1中添加了Book 1，而不是Book 2，无法在购物车中添加第二，第三产品。以下是我的jquery和HTML代码。
HTML
<div class="cd-cart-container empty">
<a href="#0" class="cd-cart-trigger">
<ul class="count"> <!-- cart items count -->
<li>0</li>
<li>0</li>
</ul> <!-- .count -->
</a>
<div class="cd-cart">
<div class="wrapper">
<header>
<h2>Cart</h2>
<span class="undo">Item removed. <a href="#0">Undo</a></span>
</header>
<div class="body">
<ul>
<!-- products added to the cart will be inserted here using
JavaScript -->
</ul>
</div>
<footer>
<a href="#0" class="checkout btn"><em>Checkout - $<span>0</span>
</em></a>
</footer>
</div>
</div> <!-- .cd-cart -->
</div>
-----------------------销售书代码------ 书1
<td> Rs. 100/ </td>
<td>
<a href="#0" class="cd-add-to-cart" data-price="100">Add To Cart</a>
</td>
</tr>
-----------For sale of book 2-------------
<tr>
<td>Book 2</td>
<td> Rs. 100/ </td>
<td>
<a href="#0" class="cd-add-to-cart" data-price="100">Add To
Cart</a> //here while clicking on add to cart book1 is getting added
instead of book2
</td>
</tr>
jQuery(document).ready(function($){
var cartWrapper = $('.cd-cart-container');
//product id - you don't need a counter in your real project but you can use
your real product id
var productId = 0;
if( cartWrapper.length > 0 ) {
//store jQuery objects
var cartBody = cartWrapper.find('.body')
var cartList = cartBody.find('ul').eq(0);
var cartTotal = cartWrapper.find('.checkout').find('span');
var cartTrigger = cartWrapper.children('.cd-cart-trigger');
var cartCount = cartTrigger.children('.count')
var addToCartBtn = $('.cd-add-to-cart');
var undo = cartWrapper.find('.undo');
var undoTimeoutId;
//add product to cart
addToCartBtn.on('click', function(event){
event.preventDefault();
addToCart($(this));
});
//open/close cart
cartTrigger.on('click', function(event){
event.preventDefault();
toggleCart();
});
//close cart when clicking on the .cd-cart-container::before (bg layer)
cartWrapper.on('click', function(event){
if( $(event.target).is($(this)) ) toggleCart(true);
});
//delete an item from the cart
cartList.on('click', '.delete-item', function(event){
event.preventDefault();
removeProduct($(event.target).parents('.product'));
});
//update item quantity
cartList.on('change', 'select', function(event){
quickUpdateCart();
});
//reinsert item deleted from the cart
undo.on('click', 'a', function(event){
clearInterval(undoTimeoutId);
event.preventDefault();
cartList.find('.deleted').addClass('undo-
deleted').one('webkitAnimationEnd oanimationend msAnimationEnd
animationend', function(){
$(this).off('webkitAnimationEnd oanimationend msAnimationEnd
animationend').removeClass('deleted undo-deleted').removeAttr('style');
quickUpdateCart();
});
undo.removeClass('visible');
});
}
function toggleCart(bool) {
var cartIsOpen = ( typeof bool === 'undefined' ) ?
cartWrapper.hasClass('cart-open') : bool;
if( cartIsOpen ) {
cartWrapper.removeClass('cart-open');
//reset undo
clearInterval(undoTimeoutId);
undo.removeClass('visible');
cartList.find('.deleted').remove();
setTimeout(function(){
cartBody.scrollTop(0);
//check if cart empty to hide it
if( Number(cartCount.find('li').eq(0).text()) == 0)
cartWrapper.addClass('empty');
}, 500);
} else {
cartWrapper.addClass('cart-open');
}
}
function addToCart(trigger) {
var cartIsEmpty = cartWrapper.hasClass('empty');
//update cart product list
addProduct();
//update number of items
updateCartCount(cartIsEmpty);
//update total price
updateCartTotal(trigger.data('price'), true);
//show cart
cartWrapper.removeClass('empty');
}
function addProduct() {
//this is just a product placeholder
//you should insert an item with the selected product info
//replace productId, productName, price and url with your real product
info
productId = productId + 1;
var productAdded = $('<li class="product"><div class="product-image"><a
href="#0"><img src="img/product-preview.png" alt="placeholder"></a></div>
<div class="product-details"><h3><a href="#0">Product Name</a></h3><span
class="price">$25.99</span><div class="actions"><a href="#0" class="delete-
item">Delete</a><div class="quantity"><label for="cd-product-'+ productId
+'">Qty</label><span class="select"><select id="cd-product-'+ productId +'"
name="quantity"><option value="1">1</option><option value="2">2</option>
<option value="3">3</option><option value="4">4</option><option
value="5">5</option><option value="6">6</option><option
value="7">7</option>
<option value="8">8</option><option value="9">9</option></select></span>
</div></div></div></li>');
cartList.prepend(productAdded);
}
function removeProduct(product) {
clearInterval(undoTimeoutId);
cartList.find('.deleted').remove();
var topPosition = product.offset().top -
cartBody.children('ul').offset().top ,
productQuantity =
Number(product.find('.quantity').find('select').val()),
productTotPrice = Number(product.find('.price').text().replace('$',
'')) * productQuantity;
product.css('top', topPosition+'px').addClass('deleted');
//update items count + total price
updateCartTotal(productTotPrice, false);
updateCartCount(true, -productQuantity);
undo.addClass('visible');
//wait 8sec before completely remove the item
undoTimeoutId = setTimeout(function(){
undo.removeClass('visible');
cartList.find('.deleted').remove();
}, 8000);
}
function quickUpdateCart() {
var quantity = 0;
var price = 0;
cartList.children('li:not(.deleted)').each(function(){
var singleQuantity = Number($(this).find('select').val());
quantity = quantity + singleQuantity;
price = price +
singleQuantity*Number($(this).find('.price').text().replace('$', ''));
});
cartTotal.text(price.toFixed(2));
cartCount.find('li').eq(0).text(quantity);
cartCount.find('li').eq(1).text(quantity+1);
}
function updateCartCount(emptyCart, quantity) {
if( typeof quantity === 'undefined' ) {
var actual = Number(cartCount.find('li').eq(0).text()) + 1;
var next = actual + 1;
if( emptyCart ) {
cartCount.find('li').eq(0).text(actual);
cartCount.find('li').eq(1).text(next);
} else {
cartCount.addClass('update-count');
setTimeout(function() {
cartCount.find('li').eq(0).text(actual);
}, 150);
setTimeout(function() {
cartCount.removeClass('update-count');
}, 200);
setTimeout(function() {
cartCount.find('li').eq(1).text(next);
}, 230);
}
} else {
var actual = Number(cartCount.find('li').eq(0).text()) + quantity;
var next = actual + 1;
cartCount.find('li').eq(0).text(actual);
cartCount.find('li').eq(1).text(next);
}
}
function updateCartTotal(price, bool) {
bool ? cartTotal.text( (Number(cartTotal.text()) +
Number(price)).toFixed(2) ) : cartTotal.text( (Number(cartTotal.text()) -
Number(price)).toFixed(2) );
}
});