ecshop商品属性库存尺码联动的实现方法

.catt{width: ;height:auto;overflow:hidden;padding-bottom:5px;}
.catt a{border: #7E7E7E 1px solid;  text-align: center; background-color: #fff; margin-
left:5px;margin-top:6px;padding-left: 10px;padding-right: 10px;display: block; white-space: nowrap;
color:#000; text-decoration:none; float:left;}
.catt a:hover {border:#ED0036 2px solid; margin: -1px; margin-left:4px;margin-top:5px;}
.catt a:focus {outline-style:none;}
.catt .cattsel {border:#ED0036 2px solid; margin: -1px;background: url("images/test.gif") no-repeat
bottom right; margin-left:4px;margin-top:5px;}
.catt .cattsel a:hover {border: #ED0036 2px solid;margin:-1px;background: url("images/test.gif") no-
repeat bottom right;}

<!-- {foreach from=$spec.values item=value key=key} -->
<label for="spec_value_{$value.id}">
<input type="radio" name="spec_{$spec_key}" value="{$value.id}"
id="spec_value_{$value.id}" {if $key eq 0}checked{/if} onclick="changePrice()" />
{$value.label} [{if $value.price gt 0}{$lang.plus}{elseif $value.price lt 0}
{$lang.minus}{/if} {$value.format_price|abs}] </label><br />
<!-- {/foreach} -->

<div class="catt">
<!-- {foreach from=$spec.values item=value key=key} -->
<a {if $key eq 0}class="cattsel"{/if} onclick="changeAtt(this,{$value.id},{$goods.goods_id})"
href="javascript:;" name="{$value.id}" title="[{if $value.price gt 0}{$lang.plus}{elseif $value.price
lt 0}{$lang.minus}{/if} {$value.format_price|abs}]">{$value.label}<input style="display:none"
id="spec_value_{$value.id}" type="radio" name="spec_{$spec_key}" value="{$value.id}" {if $key eq 0}
checked{/if} /></a>
<!-- {/foreach} -->
</div>

function changeAtt(t,a,goods_id) {
t.lastChild.checked='checked';
for (var i = 0; i<t.parentNode.childNodes.length;i++) {
if (t.parentNode.childNodes[i].className == 'cattsel') {
t.parentNode.childNodes[i].className = '';
}
}
t.className = "cattsel";
var formBuy = document.forms['ECS_FORMBUY'];
spec_arr = getSelectedAttributes(formBuy);
Ajax.call('goods.php?act=get_products_info', 'id=' + spec_arr+ '&goods_id=' + goods_id, shows_number,
'GET', 'JSON');
changePrice();
}
function shows_number(result)
{
if(result.product_number !=undefined)
{
//这里我把$换成了document.getElementById，因为ecshop有时候不兼容jquery
//$('shows_number').innerHTML = result.product_number+'件';
document.getElementById('shows_number').innerHTML = result.product_number+'件';
}
else
{
document.getElementById('shows_number').innerHTML = '未设置';
//$('shows_number').innerHTML = '未设置';
}
}

if (!empty($_REQUEST['act']) && $_REQUEST['act'] == 'get_products_info')
{
include('includes/cls_json.php');
$json = new JSON;
// $res = array('err_msg' => '', 'result' => '', 'qty' => 1);
$spce_id = $_GET['id'];
$goods_id = $_GET['goods_id'];
$row = get_products_info($goods_id,explode(",",$spce_id));
//$res = array('err_msg'=>$goods_id,'id'=>$spce_id);
die($json->encode($row));
}