帝国CMS模板之插件购物车商品数量及时增加减少

帝国cms购物车代码：

<form action="[!—-news.url–]e/ShopSys/doaction.php" name="shopform" method="get" target="_blank">
<div class="img_box_r_3_1">
<a href="javascript:pnUpdate('down')">-</a>
<input name="pn" id="pn" type="text" value="1" size="3"/>
<a href="javascript:pnUpdate('up')">+</a>
<b>[ [!—-kc–] ]</b>
</div>
<input type="hidden" name="enews" value="AddBuycar">
<input type="hidden" name="classid" value="[!—-classid–]">
<input type="hidden" name="id" value="[!—-id–]">
<div class="img_box_r_3_2">
<input type="submit" name="submit" value="加入购物车">
<a href="[!—-news.url–]e/member/fava/add/?classid=46&amp;id=6" target="_blank">加入收藏夹</a>
</div>
</form>

帝国CMS购物车商品数量增加减少JS

//产品详细页购买数量增加减少
function pnUpdate(kind){
var f = document.shopform;
var c = f.pn.value;
if(kind == "up"){
c++;
}else if(kind == "down"){
if(c > 1) c–;
}
f.pn.value = c;
}

CSS样式大家自行修改。