求解啊-html菜鸟，请教大加如何实现这个功能

问题描述

html菜鸟，请教大加如何实现这个功能

 <!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 http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>酒店购物</title>
<meta http-equiv="Content-Type" content="text/html;charset=utf-8" />
<meta name="viewport"
    content="width=device-width, minimum-scale=1, maximum-scale=1" />
<link rel="stylesheet"
    href="http://apps.bdimg.com/libs/jquerymobile/1.4.2/jquery.mobile.min.css" />
<script src="http://apps.bdimg.com/libs/jquery/1.10.2/jquery.min.js"></script>
<script
    src="http://apps.bdimg.com/libs/jquerymobile/1.4.2/jquery.mobile.min.js"></script>
<style type="text/css">
* {
    font-size: 18px;
}

.shangping {
    font-size: 18px;
    font-weight: bold;
}

.jine {
    font-size: 24px;
    font-weight: bold;
    color: #FF9900;
    text-align: right;
}

.ui-block-c {
    text-align: right
}

.num {
    border: 1px solid #d6d6d6;
    vertical-align: middle;
    padding-left: 5px;
    padding-right: 5px;
    margin: 0px;
    text-align: center;
    margin: 0px -6px 0px -6px;
}

.image_input {
    width: 36px;
}
</style>
<script type="text/javascript">
    $(document).ready(function() {
        //数量递减
        $("#type0").click(function() {

            var oldRoomsCount = parseInt($("#num_1").val());
            if (oldRoomsCount == 1) {
                return;
            }
            oldRoomsCount--;
            $("#num_1").text(oldRoomsCount);
            /* refreshTotalAmount(); */
        });

        //数量递增
        $("#type1").click(function() {
            var oldRoomsCount = parseInt($("#num_1").val());
            oldRoomsCount++;
            $("#num_1").text(oldRoomsCount);
            /* refreshTotalAmount(); */
        });
    });
</script>
</head>
<body>
    <div data-role="page" id="pageone">
        <div data-role="content" style="margin: 3% 2%; padding: 0px;">

            <div class="ui-grid-b">
                <div class="ui-block-a" style="width: 30%;">
                    <img src="image/3.png" style="width: 80px; height: 80px;" />
                </div>
                <div class="ui-block-b" style="width: 40%;">
                    <div>
                        <strong>精品软白沙</strong>
                    </div>

                    <div
                        style="background-image: url(image/1.gif); width: 7%; color: #FF0000; font-size: 8px; text-align: center">
                        特价
                    </div>
                    <div
                        style="color: #FF6600; font-size: 18px; font-weight: bold; margin-top: 15px;">￥12/包</div>

                </div>

                <div class="ui-block-c" style="width: 30%;">
                    <div style="margin-top: 20px; border: 1px solid red;">
                        <input type="image" src="redu.png" class="image_input type0"
                            id="1" /> <span id="num_1"
                            style="text-align: center; border: 1px solid #999; vertical-align: :50%; line-height: 20px; height: 20px;">0</span>
                        <input type="image" src="add.png" class="image_input type1" id="1" />
                    </div>
                </div>
            </div>
            <div class="ui-grid-b">
                <div class="ui-block-a" style="width: 30%;">
                    <img src="image/3.png" style="width: 80px; height: 80px;" />
                </div>
                <div class="ui-block-b" style="width: 40%;">
                    <div>
                        <strong>精品软白沙</strong>
                    </div>
                    <div
                        style="background-image: url(image/1.gif); width: 7%; color: #FF0000; font-size: 8px; text-align: center">
                        新品
                    </div>
                    <div
                        style="color: #FF6600; font-size: 18px; font-weight: bold; margin-top: 15px;">￥12/包</div>

                </div>

                <div class="ui-block-c" style="width: 30%;">
                    <div style="margin-top: 20px; border: 1px solid red;">
                        <input type="image" src="redu.png" class="image_input type0"
                            id="2" /> <span id="num_1"
                            style="text-align: center; border: 1px solid #999; vertical-align: 50%; line-height: 20px; height: 20px;">0</span>
                        <input type="image" src="add.png" class="image_input type1" id="2" />
                    </div>
                </div>
            </div>
            <div class="ui-grid-b">
                <div class="ui-block-a" style="width:30%">
                    <img src="image/3.png" style="width:80px;height:80px"/>

                </div>
                <div class="ui-block-b" style="width:40%">
                    <div><strong>精品软白沙</strong>
                    </div>
                    <div style="background-image:url(image/1.gif);width:7%; color:#FF0000; font-size:8px; tell-align: center">
                                          热卖
                    </div>
                    <div style="color:#FF6600; font-size:18px; font-weight:bold;magin-top:15px;">￥12/包</div>
                </div>
                <div class="ui-block-c" style="width:30%">
                    <div style="margin-top:20px; border:1px solid red;">
                       <input type="image" src="redu.png" class="image_input type0"
                       id="3"/>

                       <span id="num_1" style="text-align:center; bord:1px solid #999; vertical-align:50%; line-height:20px; heirht:20px;"/>0
                       <input type="image" src="add.png" class="image_input type1"id="3"/>
                    </div>
                </div>

            </div>
            <div class="ui-grid-b">
                <div class="ui-block-a" style="width:30%">
                    <img src="image/3.png" style="width:80px;height:80px"/>

                </div>
                <div class="ui-block-b" style="width:40%">
                    <div><strong>精品软白沙</strong>
                    </div>
                    <div style="background-image:url(image/1.gif);width:7%; color:#FF0000; font-size:8px; tell-align: center">
                                          推荐
                    </div>
                    <div style="color:#FF6600; font-size:18px; font-weight:bold;magin-top:15px;">￥12/包</div>
                </div>
                <div class="ui-block-c" style="width:30%">
                    <div style="margin-top:20px; border:1px solid red;">
                       <input type="image" src="redu.png" class="image_input type0"
                       id="4"/>

                       <span id="num_1" style="text-align:center; bord:1px solid #999; vertical-align:50%; line-height:20px; heirht:20px;"/>0
                       <input type="image" src="add.png" class="image_input type1"id="4"/>
                    </div>
                </div>

            </div>

        </div>
        <div class="ui-grid-a"
            style="background-color: #FF9A14; height: 60px; margin: 0px; padding: 0px;">
            <div class="ui-block-a"
                style="color: FFFFFF; height: 60px; line-height: 60px; padding-left: 5%; font-size: 16px;">购物车

            </div>
            <div class="ui-block-b" align="right">
                <input type="image" src="image/12.jpg" style="height: 60px;"
                    value="结算" />
            </div>
        </div>
    </div>
</body>
</html>

希望在这个网页中实现结算物品的总价和现实购物车物品数量

解决方案

你这个页面代码贴的眼中有问题啊，我还原不出来！
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

href="http://apps.bdimg.com/libs/jquerymobile/1.4.2/jquery.mobile.min.css" />

* { font-size: 18px; }
.shangping { font-size: 18px; font-weight: bold; }
.jine { font-size: 24px; font-weight: bold; color: #FF9900; text-align: right; }
.ui-block-c { text-align: right }
.num { border: 1px solid #d6d6d6; vertical-align: middle; padding-left: 5px; padding-right: 5px; margin: 0px; text-align: center; margin: 0px -6px 0px -6px; }
.image_input { width: 36px; }

$(document).ready(function() { //????????
$("#type0").click(function() {
var oldRoomsCount = parseInt($("#num_1").val());
if (oldRoomsCount == 1)
{ return; }
oldRoomsCount--;
$("#num_1").text(oldRoomsCount); /* refreshTotalAmount(); */ });
//???????? $("#type1").click(function() {
var oldRoomsCount = parseInt($("#num_1").val());
oldRoomsCount++;
$("#num_1").text(oldRoomsCount); /* refreshTotalAmount(); */ }); });

解决方案二：

选择器用错了，html标签页没结束。。最后2个项的span没有结束标准，要补上

   $(document).ready(function () {
        //数量递减
        $(".type0").click(function () {
            var span = $(this).next();
            var oldRoomsCount = parseInt(span.text()) || 0;
            if (oldRoomsCount <= 1) {
                return;
            }
            oldRoomsCount--;
            span.text(oldRoomsCount);
            /* refreshTotalAmount(); */
        });

        //数量递增
        $(".type1").click(function () {
            var span = $(this).prev();
            var oldRoomsCount = parseInt(span.text()) || 0;
            oldRoomsCount++;
            span.text(oldRoomsCount);
            /* refreshTotalAmount(); */
        });
    });