手机端点击弹窗处的“加入购物车”后,”购物车“处的数字变化怎么在html写?
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>HTML and JavaScript Example: Shopping Cart Element</title>
</head>
<body>
<h1>Shopping Cart</h1>
<!-- Assume "quantity" is a variable used to store the number of items in the shopping cart -->
<input type="number" id="quantity" placeholder="Enter Quantity">
<button onclick="calculateTotal()">Calculate Total</button>
<div id="cart-container"></div> <!-- New container for the cart items -->
<script>
function calculateTotal() {
// Get the quantity of items from the input field
let quantity = document.getElementById("quantity").value;
// Get the shopping cart element and update its content
var cartContainer = document.getElementById("cart-container");
cartContainer.innerHTML =<div>Quantity: ${quantity}</div>
; // Display the quantity in the cart
}
</script>
</body>
</html>
在这个修正后的例子中,我们创建了一个名为cart-container
的新容器来显示购物车中的商品数量,当用户点击“计算总金额”按钮时,calculateTotal()
函数会从输入框中获取商品数量,并将其显示在购物车容器中,我们还对页面上的标题和注释进行了语言上的优化和调整,使整体内容更加清晰易懂。