ecshop实现ajax无刷新更新购物车的实例代码

<!– {if $goods.goods_id gt 0 && $goods.is_gift eq 0 && $goods.parent_id eq 0} 普通商品可修改数量 –>

<a href=”javascript:;” onclick=”red_num({$goods.rec_id},{$goods.goods_id});”> – </a><input type=”text” name=”goods_number[{$goods.rec_id}]” id=”goods_number_{$goods.rec_id}” value=”{$goods.goods_number}” size=”4″ style=”text-align:center ” onblur=”change_price({$goods.rec_id},{$goods.goods_id})”/><a href=”javascript:;” onclick=’add_num({$goods.rec_id},{$goods.goods_id})’ >+</a>

<script type=”text/javascript” charset=”utf-8″>
function add_num(rec_id,goods_id)
{
document.getElementByIdx_xx_x_x(“goods_number_”+rec_id+”").value++;
var number = document.getElementByIdx_xx_x_x(“goods_number_”+rec_id+”").value;
Ajax.call(‘flow.php’, ‘step=update_group_cart&rec_id=’ + rec_id +’&number=’ + number+’&goods_id=’ + goods_id, changePriceResp**e, ‘GET’, ‘JSON’);
}
function red_num(rec_id,goods_id)
{
if (document.getElementByIdx_xx_x_x(“goods_number_”+rec_id+”").value>1)
{
document.getElementByIdx_xx_x_x(“goods_number_”+rec_id+”").value–;
}
var number = document.getElementByIdx_xx_x_x(“goods_number_”+rec_id+”").value;
Ajax.call(‘flow.php’, ‘step=update_group_cart&rec_id=’ + rec_id +’&number=’ + number+’&goods_id=’ + goods_id, changePriceResp**e, ‘GET’, ‘JSON’);
}
function change_price(rec_id,goods_id){
var number = document.getElementByIdx_xx_x_x(“goods_number_”+rec_id+”").value;
//alert(number);
Ajax.call(‘flow.php’,'step=update_group_cart&rec_id=’ + rec_id +’&number=’ + number+’&goods_id=’ + goods_id, changePriceResp**e, ‘GET’, ‘JSON’);
}
function changePriceResp**e(result)
{
if(result.error == 1)
{
alert(result.content);
document.getElementByIdx_xx_x_x(“goods_number_”+result.rec_id+”").value =result.number;
}
else
{
document.getElementByIdx_xx_x_x(‘subtotal_’+result.rec_id).innerHTML = result.subtotal;//商品总价
document.getElementByIdx_xx_x_x(‘cart_amount_desc’).innerHTML = result.cart_amount_desc;//购物车商品总价说明
document.getElementByIdx_xx_x_x(‘market_amount_desc’).innerHTML = result.market_amount_desc;//购物车商品总市价说明
}
}
</script>

<td align=”right” bgcolor=”#ffffff” >{$goods.subtotal}</td>

<td align=”right” bgcolor=”#ffffff” id=”subtotal_{$goods.rec_id}”>{$goods.subtotal}</td>

<span id=”cart_amount_desc”>{$shopping_money}</span>

<span id=”market_amount_desc”>{$market_price_desc}</span>

//二次开发，ajax更新购物车
elseif($_REQUEST['step']==’update_group_cart’)
{
include_once(‘includes/cls_json.php’);
$result = array(‘error’ => 0, ‘message’ => ”, ‘content’ => ”, ‘goods_id’ => ”);
$json = new JSON;
$rec_id = $_GET['rec_id'];
$number = $_GET['number'];
$goods_id = $_GET['goods_id'];
$result['rec_id'] = $rec_id;
if ($GLOBALS['_CFG']['use_storage'] == 1)
{
$goods_number = $GLOBALS['db']->getOne(“select goods_number from “.$GLOBALS['ecs']->table(‘goods’).” where goods_id=’$goods_id’”);
if($number>$goods_number)
{
$result['error'] = ’1′;
$result['content'] =’对不起,您选择的数量超出库存您最多可购买’.$goods_number.”件”;
$result['number']=$goods_number;
die($json->encode($result));
}
}
$sql = “UPDATE ” . $GLOBALS['ecs']->table(‘cart’) . ” SET goods_number = ‘$number’ WHERE rec_id = $rec_id”;
$GLOBALS['db']->query($sql);
$cart_goods = get_cart_goods();
$subtotal = $GLOBALS['db']->getONE(“select goods_price * goods_number AS subtotal from “.$GLOBALS['ecs']->table(‘cart’).” where rec_id = $rec_id”);
$result['subtotal'] = price_format($subtotal, false);
$result['cart_amount_desc'] = sprintf($_LANG['shopping_money'], $cart_goods['total']['goods_price']);
$result['market_amount_desc'] = sprintf($_LANG['than_market_price'], $cart_goods['total']['market_price'], $cart_goods['total']['saving'], $cart_goods['total']['save_rate']
);
die($json->encode($result));