<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
</head>
<body>
<div class="zaocan_2_2">
<div class="card">
<p class="p1">流油包子</p>
<p class="p4 zao_1"><span class="zaocan_price">5.00</span>/份</p>
<div class="zaocan_2_1">
<input class="min" name="" type="button" value="-" />
<input class="text_box" name="" type="text" value="0" />
<input class="add" name="" type="button" value="+" />
</div>
</div>
</div>
<div class="zaocan_2_2">
<div class="card">
<p class="p1">小米粥</p>
<p class="p4 zao_1"><span class="zaocan_price">2.00</span>/份</p>
<div class="zaocan_2_1">
<input class="min" name="" type="button" value="-" />
<input class="text_box" name="" type="text" value="0" />
<input class="add" name="" type="button" value="+" />
</div>
</div>
</div>
<p class="zaocan_13">￥:
<label id="total"></label>
</p>
<script src="jquery.js"></script>
<script>
$(function() {
$(".add").click(function() {
var t = $(this).parent().find('input[class*=text_box]');
t.val(parseInt(t.val()) + 1)
setTotal();
})
$(".min").click(function() {
var t = $(this).parent().find('input[class*=text_box]');
t.val(parseInt(t.val()) - 1)
if (parseInt(t.val()) < 0) {
t.val(0);
}
setTotal();
})
function setTotal() {
var s = 0;
$(".zaocan_2_2").each(function() {
s += parseInt($(this).find('input[class*=text_box]').val()) * parseFloat($(this).find('span[class*=zaocan_price]').text());
});
$("#total").html(s.toFixed(2));
}
setTotal();
})
</script>
</body>
</html>