通过AJAX方式动态更新ecshop购物车页面的商品数量的方法

<INPUT  onblur=”changePrice(document.getElementById (‘goods_number_{$goods.rec_id}’).value,{$goods.rec_id})” name=”goods_number [{$goods.rec_id}]” id=”goods_number_{$goods.rec_id}” value=”{$goods.goods_number}”  id=”ECS_FORMBUY”> 在文件最后添加一段js   <script type=”text/javascript”> function changePrice(number,rec_id) {   var attr = getSelectedAttributes(document.forms['ECS_FORMBUY']);   var qty = document.forms['ECS_FORMBUY'].elements['number'].value;      Ajax.call(‘flow.php’, ‘step=update_group_ cart&rec_id=’ + rec_id +’&number=’ + number, changePriceResponse, ‘GET’, ‘JSON’); } function changePriceResponse(res) {   if (res.error > 0)   {     document.getElementById(‘sysmsg_error’).innerHTML = res.content;     document.all.sysmsg_error.style.display=”;   }   else   {     if(document.all.sysmsg_error.style.display==”)   {    document.all.sysmsg_error.style.display=’none’;   }  document.getElementById(‘subtotal_’+res.rec_id).innerHTML = res.subtotal;  document.getElementById(‘cart_amount’).innerHTML = res.cart_amount;   } } </script>   二、在flow.php文件中插入对应的处理代码： elseif($_REQUEST['step'] == ‘update_group_cart’) { include_once(‘includes/cls_json.php’); $json = new JSON(); $result = array(‘error’ => ”, ‘content’ => ”); $rec_id = $_GET['rec_id']; $number = $_GET['number']; $group_buy = group_buy_info($_SESSION['extension_id'], $number); if(!is_numeric($number)) { $result['error'] = ’1′; $result['content'] =’请输入合法数量’; die($json->encode($result)); } if ($group_buy['restrict_amount'] > 0 && $number > ($group_buy['restrict_amount'] – $group_buy['valid_goods']))  { $result['error'] = ’1′; $restrict_amount =  $group_buy['restrict_amount'] – $group_buy['valid_goods']; $result['content'] =’您最多可买’.$restrict_amount.’件’; die($json->encode($result)); } $sql = “UPDATE ” . $GLOBALS['ecs']->table(‘cart’) . ” SET goods_number = ‘$number’ WHERE rec_id = $rec_id”; $GLOBALS['db']->query($sql); $subtotal = $GLOBALS['db']->getONE(“select goods_price * goods_number AS subtotal from “.$GLOBALS['ecs']->table(‘cart’).” where rec_id = $rec_id”); $cart_amount = cart_amount(”,$_SESSION['flow_type']); $result['subtotal'] = price_format($subtotal, false); $result['cart_amount'] = price_format($cart_amount, false); $result['rec_id'] = $rec_id; die($json->encode($result)); }   还等什么？马上清空echsop的缓存刷新页面看看效果吧。