Implementation of shopping cart function based on JavaScript
- 2021-07-18 06:29:56
- OfStack
In this paper, we share the specific code of js shopping cart function for your reference, the specific contents are as follows
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<script src="js/jquery-1.12.4.js"></script>
</head>
<body>
<div id="shop">
<button id="btAdd"> My shopping cart </button><br><br>
<table id="cart">
<thead>
<tr>
<th> Unit price </th>
<th> Quantity </th>
<th> Subtotal </th>
<th> Operation </th>
</tr>
</thead>
<tbody>
</tbody>
<tfoot>
<tr>
<td colspan="4"> Total amount of shopping cart: <span id="total">0.00</span></td>
</tr>
</tfoot>
</table>
</div>
<div id="footer"></div>
<script>
$('#read .page li a').click(function(){
var n=$(this).html();
$(this).parent().parent().next().children('p:nth-child('+n+')').slideDown(2000);
$(this).parent().parent().next().children('p:nth-child('+n+')').siblings().css('display','none');
})
$('#btAdd').click(function(){
var p = randPrice();
var c = randCount();
$('#cart tbody').append('<tr>'+
'<td>'+p+'</td>'+
'<td><input type="text" value="'+c+'"></td>'+
'<td>'+parseFloat((p*c).toFixed(2))+'</td>'+
'<td><a href="#" rel="external nofollow" >×</a></td>'+
'</tr>');
$('#total').html( getTotal() );
});
// For the Delete button ( I.e. X No. ) Bind the event listener function, note: X Is added later, a lot X The behavior performed is 1 Sample-using event brokers
$('#cart tbody').delegate('td > a', 'click',function(event){
event.preventDefault();
var a = event.target;
$(a).parent().parent().remove();
});
// Do event binding for the "Purchase Quantity" input box-use event broker
$('#cart tbody').delegate('td > input','change', function(event){
var input = event.target;
var count = input.value;
var price = $(input).parent().prev().html();
$(input).parent().next().html( price*count );
$('#total').html( getTotal() );
})
// Calculate the total amount of shopping cart
function getTotal(){
var sum = 0;
$('#cart tbody tr td:nth-child(3)').each(function(i, td){
sum += parseInt(td.innerHTML);
})
return sum;
}
function randPrice(){
var p = Math.random()*100;
p = p.toFixed(2);
p = parseFloat(p);
return p;
}
function randCount() {
var c = Math.floor(Math.random() * 10 + 1);
return c;
}
$('#header').load('php/header.php');
$('#footer').load('php/footer.php');
var theme=localStorage.getItem('ChoseTheme');
applyTheme(theme)
</script>
</body>
</html>