<a title="减一" onclick="subtractCount('p001')" href="#none" clstag="clickcart|keycount|shoppingcartpop|diminish1"><img src="skin/images/bag_close.gif" alt="66" border="none"  width="20"/></a>
<input id="p001Count" width="20" value="1" maxlength="4" type="text" name="txtChange593235" onkeyup="keyUpCheck(this,'p001')" />
<a title="加一" onclick="addCount('p001')" href="#none" clstag="clickcart|keycount|shoppingcartpop|add1"><img src="skin/images/bag_open.gif" alt="666" border="none"  width="20"/></a>
<input  type="hidden" id="p001PerPrice" value="3400.31"/>
<input  type="hidden" id="p001StockCount" value="10"/>
    </td>

  </tr>

   <tr>
    <td width="7%">商品编号</td>
    <!--td width='6%' style='height:30px;'>商品编号</td-->
    <td>商品名称</td>
    <td width="14%">京东价</td>
    <td width="8%">返现</td>
    <td width="8%">赠送积分</td>
    <!--td width='10%'>京东价</td>      <td width='10%'>优惠明细</td>      <td width='11%'>送至{Provinces}</td-->
    <td width="9%">商品数量</td>
    <td width="7%">删除商品</td>
  </tr>
  <tr>
    <td>593235</td>
    <td><div><a  target="_blank" clstag="clickcart|keycount|shoppingcartpop|p-imglistcart"><img  alt="66" /></a></div>
      </td>
    <td>￥10.3 </td>
    <td>￥0.00</td>
    <td>0</td>
    <!--td>-</td-->
    <!--td></td-->
    <td>
<a title="减一" onclick="subtractCount('p002')" href="#none" clstag="clickcart|keycount|shoppingcartpop|diminish1"><img src="skin/images/bag_close.gif" alt="66" border="none"  width="20"/></a>
<input id="p002Count" width="20" value="1" maxlength="4" type="text" name="txtChange593235" onkeyup="keyUpCheck(this,'p002')" />
<a title="加一" onclick="addCount('p002')" href="#none" clstag="clickcart|keycount|shoppingcartpop|add1"><img src="skin/images/bag_open.gif" alt="666" border="none"  width="20"/></a>
<input  type="hidden" id="p002PerPrice" value="1000.3"/>
<input  type="hidden" id="p002StockCount" value="10"/>
    </td>

  </tr>
  <tr>
    <td colspan="7"><br />
        <strong>商品总金额：￥<span id="cartBottom_price">3499.00</span>元</strong></td>
  </tr>
</table>
<script type="text/javascript">
/*
要点元素
<a title="减一" onclick="subtractCount('p001')" --传产品编号唯一
<a title="加一" onclick="addCount('p002')"  --上同功能加
//产品数量 id="pid"+"Count"
onkeyup="keyUpCheck(this,'p002')" 这个是检查库存数量的
<input id="p002Count" width="20" value="1" maxlength="4" type="text" name="txtChange593235" onkeyup="keyUpCheck(this,'p002')" />
以下是产品单价的隐藏域
<input  type="hidden" id="p002PerPrice" value="1000.3"/>
一下产品库存数量的隐藏域
<input  type="hidden" id="p002StockCount" value="10"/>
这个地方是要计算产品的id集合
var  pids = ["p001","p002"];

cartBottom_price 总价格id
PerCount
*/
var  pids = ["p001","p002"];
function JSRound(fNum,fBit){
 var i = 1;
 var m = 1;
 var tempNum = fNum;
 for(i=0;i <= fBit;i++)
  m = m * 10;
 tempNum = tempNum * m;
 tempNum = Math.round(tempNum);
 tempNum = tempNum / m;
return tempNum;

}
function $(id)
{
 return document.getElementById(id);
}
function addCount(pid)
{
 var currentVal = $(pid+"Count").value;
 
 var stockCurrentVal = $(pid+'StockCount').value;
 currentVal=parseInt(currentVal)+1;
  if(currentVal>stockCurrentVal)
  {
  alert("库存为"+stockCurrentVal+"个仅能购买次数量");
  currentVal=stockCurrentVal;
  }
 $(pid+"Count").value=currentVal;
 computeTotal();
}
function subtractCount(pid)
{
 var currentVal = $(pid+"Count").value;
 var stockCurrentVal = $(pid+'StockCount').value;
 currentVal=parseInt(currentVal)-1;
  if(currentVal<=0)
  {
  currentVal=1;
  }
  if(currentVal>stockCurrentVal)
  {
  alert("库存为"+stockCurrentVal+"个仅能购买次数量");
  currentVal=stockCurrentVal;
  }
 $(pid+"Count").value=currentVal;
 computeTotal();
}
function computeTotal(){
var totalMoney =0;
var perMoney=0;
 for(var i=0;i<pids.length;i++)
 {
  try{
  perMoney = parseFloat($(pids[i]+"PerPrice").value)*parseInt($(pids[i]+"Count").value);
  }
  catch(e)
  {
  perMoney=0;
  }

 totalMoney+=perMoney;
 }
 totalMoney = JSRound(totalMoney,2);
 $("cartBottom_price").innerHTML=totalMoney;
}
function keyUpCheck(obj,pid){
obj.value = obj.value.replace(/[\D]+/,'');
var stockCurrentVal = $(pid+'StockCount').value;
if(parseInt(obj.value)>stockCurrentVal)
{
obj.value=stockCurrentVal;
}
}

</script>