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以下是一个简单的HTML购物车示例，包含勾选、删除、添加和结算功能。结算功能使用PHP实现，可以获取选中商品的ID。
以下是一个简单的HTML购物车示例，包含勾选、删除、添加和结算功能。结算功能使用PHP实现，可以获取选中商品的ID`以下是一个简单的HTML购物车示例，包含勾选、删除、添加和结算功能。结算功能使用PHP实现，可以获取选中商品的ID。
<!DOCTYPE html>
<html>
<head><link rel="stylesheet" href="css/style.css" /><title>购物车</title><style>table {border-collapse: collapse;width: 100%;}th, td {text-align: left;padding: 8px;border-bottom: 1px solid #ddd;}tr:hover {background-color: #f5f5f5;}.check {width: 20px;}.delete {color: red;cursor: pointer;}.total {font-weight: bold;text-align: right;}#checkout {margin-top: 20px;text-align: right;}</style>
</head>
<body><h1>购物车</h1><table><thead><tr><th class="check"></th><th>商品名称</th><th>价格</th><th>数量</th><th>小计</th><th class="delete"></th></tr></thead><tbody><tr class="item-row" data-id="1"><td class="check"><input type="checkbox" name="item[]" value="1"></td><td>商品1</td><td>10.00</td><td><input type="number" name="quantity[]" value="1"></td><td class="subtotal">10.00</td><td class="delete">X</td></tr><tr class="item-row" data-id="2"><td class="check"><input type="checkbox" name="item[]" value="2"></td><td>商品2</td><td>20.00</td><td><input type="number" name="quantity[]" value="1"></td><td class="subtotal">20.00</td><td class="delete">X</td></tr><tr class="item-row" data-id="3"><td class="check"><input type="checkbox" name="item[]" value="3"></td><td>商品3</td><td>30.00</td><td><input type="number" name="quantity[]" value="1"></td><td class="subtotal">30.00</td><td class="delete">X</td></tr></tbody><tfoot><tr><td colspan="4" class="total">总计：</td><td class="total" id="total">0.00</td><td></td></tr></tfoot></table><div id="checkout"><button onclick="checkout()">结算</button></div><script>// 计算小计和总计function updateSubtotal() {var rows = document.querySelectorAll('.item-row');var total = 0;for (var i = 0; i < rows.length; i++) {var row = rows[i];var price = parseFloat(row.querySelector('td:nth-child(3)').textContent);var quantity = parseInt(row.querySelector('input[name="quantity[]"]').value);var subtotal = price * quantity;row.querySelector('.subtotal').textContent = subtotal.toFixed(2);total += subtotal;}document.querySelector('#total').textContent = total.toFixed(2);}// 删除商品function deleteItem() {var row = this.parentNode;row.parentNode.removeChild(row);updateSubtotal();}// 添加商品function addItem() {var table = document.querySelector('table');var row = table.insertRow(-1);row.classList.add('item-row');row.dataset.id = Date.now(); // 生成一个随机IDrow.innerHTML = `<td class="check"><input type="checkbox" name="item[]" value="${row.dataset.id}"></td><td><input type="text" name="name[]"></td><td><input type="number" name="price[]" step="0.01"></td><td><input type="number" name="quantity[]" value="1"></td><td class="subtotal">0.00</td><td class="delete">X</td>`;row.querySelector('.delete').addEventListener('click', deleteItem);row.querySelector('input[name="quantity[]"]').addEventListener('input', updateSubtotal);row.querySelector('input[name="price[]"]').addEventListener('input', updateSubtotal);}// 结算选中的商品function checkout() {var items = document.querySelectorAll('input[name="item[]"]:checked');var ids = [];for (var i = 0; i < items.length; i++) {ids.push(items[i].value);}if (ids.length > 0) {window.location.href = 'checkout.php?ids=' + ids.join(',');} else {alert('请选择要结算的商品');}}// 绑定事件var deleteButtons = document.querySelectorAll('.delete');for (var i = 0; i < deleteButtons.length; i++) {deleteButtons[i].addEventListener('click', deleteItem);}var addBtn = document.querySelector('#add');addBtn.addEventListener('click', addItem);var quantityInputs = document.querySelectorAll('input[name="quantity[]"]');for (var i = 0; i < quantityInputs.length; i++) {quantityInputs[i].addEventListener('input', updateSubtotal);}var priceInputs = document.querySelectorAll('input[name="price[]"]');for (var i = 0; i < priceInputs.length; i++) {priceInputs[i].addEventListener('input', updateSubtotal);}</script>
</body>
</html>
`