ecshop教程ajax更新购物车数量

ajax更新购物车数量先打开flow.dwt，找到<!-- {if $goods.goods_idgt 0 && $goods.is_gifteq 0 && $goods.parent_ideq 0} 普通商品可修改数量 -->，把下面的input框里面的替换成1.<a href="javascript:;"onclick="red_num({$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" class="inputBg" style="text-align:center "onblur="change_price({$goods.rec_id},{$goods.goods_id})"/><ahref="javascript:;"onclick='add_num({$goods.rec_id},{$goods.goods_id})' >+</a>复制代码然后在下一个</td>后加一段js代码1.<script type="text/javascript" charset="utf-8">2.function add_num(rec_id,goods_id)3.{4.document.getElementById("goods_number_"+rec_id+"").value++;5.6.var number =document.getElementById("goods_number_"+rec_id+"").value;7.Ajax.call('flow.php', 'step=update_group_cart&rec_id=' + rec_id+'&number=' + number+'&goods_id=' + goods_id, changePriceResp**e, 'GET', 'JSON');8.9.10.}11.12.function red_num(rec_id,goods_id)13.{14.if (document.getElementById("goods_number_"+rec_id+"").value>1)15.{16.document.getElementById("goods_number_"+rec_id+"").value--;17.}18.var number =document.getElementById("goods_number_"+rec_id+"").value;19.Ajax.call('flow.php', 'step=update_group_cart&rec_id=' + rec_id+'&number=' + number+'&goods_id=' + goods_id, changePriceResp**e, 'GET', 'JSON');20.21.22.}23.24.function change_price(rec_id,goods_id){25.var number =document.getElementById("goods_number_"+rec_id+"").value;26.//alert(number);27.Ajax.call('flow.php','step=update_group_cart&rec_id=' + rec_id+'&number=' + number+'&goods_id=' + goods_id, changePriceResp**e, 'GET', 'JSON');28.}29.30.function changePriceResp**e(result)31.{32.if(result.error == 1)33.{34.35.alert(result.content);36.document.getElementById("goods_number_"+result.rec_id+"").value=result.number;37.}38.else39.{40.41.document.getElementById('subtotal_'+result.rec_id).innerHTML =result.subtotal;//商品总价42.document.getElementById('cart_amount_desc').innerHTML =result.cart_amount_desc;//购物车商品总价说明43.document.getElementById('market_amount_desc').innerHTML =result.market_amount_desc;//购物车商品总市价说明44.45.}46.47.}48.</script>复制代码接着把下一行的1.<td align="right" bgcolor="#ffffff" >{$goods.subtotal}</td> 复制代码替换为1.<td align="right" bgcolor="#ffffff"id="subtotal_{$goods.rec_id}">{$goods.subtotal}</td>复制代码找到{$shopping_money}和{$market_price_desc}，分别替换为1.<span id="cart_amount_desc">{$shopping_money}</span>复制代码和1.<span id="market_amount_desc">{$market_price_desc}</span>复制代码然后打开flow.php，在elseif ($_REQUEST['step'] == 'c**ignee')上面加这一段代码。

1.//二次开发，ajax更新购物车2.elseif($_REQUEST['step']=='update_group_cart')3.{4.include_once('includes/cls_json.php');5.$result = array('error' => 0, 'message' => '', 'content' => '','goods_id' => '');6.$json = new JSON;7.$rec_id = $_GET['rec_id'];8.$number = $_GET['number'];9.$goods_id = $_GET['goods_id'];10.$result['rec_id'] = $rec_id;11.12.13.14.if ($GLOBALS['_CFG']['use_storage'] == 1)15.{16.$goods_number = $GLOBALS['db']->getOne("select goods_number from".$GLOBALS['ecs']->table('goods')." where goods_id='$goods_id'");17.if($number>$goods_number)18.{19.$result['error'] = '1';20.$result['content'] ='对不起,您选择的数量超出库存您最多可购买'.$goods_number."件";21.$result['number']=$goods_number;22.die($json->encode($result));23.}24.25.}26.$sql = "UPDATE " . $GLOBALS['ecs']->table('cart') . " SETgoods_number = '$number' WHERE rec_id = $rec_id";27.$GLOBALS['db']->query($sql);28.29./* 取得商品列表，计算合计 */30.$cart_goods = get_cart_goods();31.32.$subtotal = $GLOBALS['db']->getONE("select goods_price *goods_number AS subtotal from ".$GLOBALS['ecs']->table('cart')."where rec_id = $rec_id");33.$result['subtotal'] = price_format($subtotal, false);34.$result['cart_amount_desc'] = sprintf($_LANG['shopping_money'],$cart_goods['total']['goods_price']);35.$result['market_amount_desc'] =sprintf($_LANG['than_market_price'],$cart_goods['total']['market_price'],$cart_goods['total']['saving'],$cart_goods['total']['save_rate']36.);37.38.die($json->encode($result));39.}。