效果
代码
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta charset="utf-8" />
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<meta name="viewport" content="width=device-width, initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0, user-scalable=no">
<title>JQuery购物车多物品数量的加减+总价计算</title>
<script type="text/javascript" src="http://code.jquery.com/jquery-1.6.1.min.js"></script>
<script>
$(function() {
$(".add").click(function() {
var t = $(this).parent().find('input[class*=text_box]');
if(t.val()==""||undefined||null){
t.val(0);
}
t.val(parseInt(t.val()) + 1)
setTotal();
})
$(".min").click(function() {
var t = $(this).parent().find('input[class*=text_box]');
if(t.val()==""||undefined||null){
t.val(0);
}
t.val(parseInt(t.val()) - 1)
if(parseInt(t.val()) < 0) {
t.val(0);
}
setTotal();
})
$(".text_box").keyup(function(){
var t = $(this).parent().find('input[class*=text_box]');
if(parseInt(t.val())==""||undefined||null || isNaN(t.val())) {
t.val(0);
}
setTotal();
})
function setTotal() {
var s = 0;
$("#tab td").each(function() {
var t = $(this).find('input[class*=text_box]').val();
var p = $(this).find('span[class*=price]').text();
if(parseInt(t)==""||undefined||null || isNaN(t) || isNaN(parseInt(t))){
t=0;
}
s += parseInt(t) * parseFloat(p);
});
$("#total").html(s.toFixed(2));
}
setTotal();
})
</script>
<style type="text/css">
input[type=number] {
-moz-appearance:textfield;
}
input[type=number]::-webkit-inner-spin-button,
input[type=number]::-webkit-outer-spin-button {
-webkit-appearance: none;
margin: 0;
}
</style>
</head>
<body>
<table id="tab">
<tr>
<td>
<span>单价:</span><span class="price">50.00</span>
<input class="min" name="" type="button" value="-" />
<input class="text_box" name="" type="number" value="" placeholder="0"/>
<input class="add" name="" type="button" value="+" />
</td>
</tr>
<tr>
<td>
<span>单价:</span><span class="price">20.00</span>
<input class="min" name="" type="button" value="-" />
<input class="text_box" name="" type="number" value="" placeholder="0"/>
<input class="add" name="" type="button" value="+" />
</td>
</tr>
</table>
<p>总价：<label id="total"></label></p>
</body>
</html>
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