jQuery实现的简易购物车增删合计
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>简易购物车增删合计</title>
<script type="text/javascript" src="jquery-1.4.2.js"></script>
<script type="text/javascript">
$(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;
$("#tab td").each(function(){
s=s +parseInt($(this).find('input[class*=text_box]').val())
*parseFloat($(this).find('span[class*=price]').text());
});
$("#total").html(s.toFixed(2));
}
setTotal();
})
</script>
</head>
<body>
<table id="tab">
<tr>
<td>
<span>单价:</span><span class="price">1.50</span>
<input class="min" name="" type="button" value="-" />
<input class="text_box" name="" type="text" value="0" readonly="readonly" />
<input class="add" name="" type="button" value="+" /></td>
</tr>
<tr>
<td>
<span>单价:</span><span class="price">3.95</span>
<input class="min" name="" type="button" value="-" />
<input class="text_box" name="" type="text" value="0" />
<input class="add" name="" type="button" value="+" /></td>
</tr>
</table>
<p>总价:<label id="total"></label></p>
</body>
</html>
