jQuery 类似购物车 多物品加减求总价

<!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>
<title>jQuery实现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]');
        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;
		$("#tab td").each(function(){			
			s+=parseInt($(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="1" />
<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="1" />
<input class="add" name="" type="button" value="+" />
</td>
</tr>
</table>

<p>总价:<label id="total"></label></p>
</body>
</html>
下载地址: http://download.csdn.net/detail/anihasiyou/7445223

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