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看到不少朋友在找首页特价商品倒计时的修改方法，写了这篇文章希望能帮到有此需要的朋友们

1、首先修改程序部分
打开includes/lib_goods.php
找到get_promote_goods()函数部分
在

$goods[$idx][‘url’]          = build_uri(‘goods’, array(‘gid’ => $row[‘goods_id’]), $row[‘goods_name’]);

（注：这里一定要谨慎，一定要找准位置，很多同志都是绊倒在这里的，如果你没修改过这个文件的话，大概是在394行的位置，找错了就出不来了)

下面增加代码

/* 促销时间倒计时 */
$time = gmtime();
if ($time >= $row[‘promote_start_date’] && $time <= $row[‘promote_end_date’])
{
$goods[$idx][‘gmt_end_time’]  = local_date(‘M d, Y H:i:s’,$row[‘promote_end_date’]);
}
else
{
$goods[$idx][‘gmt_end_time’] = 0;
}

2、然后将 library/recommend_promotion.lbi
全部替换为下面代码：

<meta http-equiv=”Content-Type” content=”text/html; charset=gbk”>
<!– {if $promotion_goods} –>
<script >
var Tday = new Array();
var daysms = 24 * 60 * 60 * 1000
var hoursms = 60 * 60 * 1000
var Secondms = 60 * 1000
var microsecond = 1000
var DifferHour = -1
var DifferMinute = -1
var DifferSecond = -1
function clock(key)
{
var time = new Date()
var hour = time.getHours()
var minute = time.getMinutes()
var second = time.getSeconds()
var timevalue = “”+((hour > 12) ? hour-12:hour)
timevalue +=((minute < 10) ? “:0″:”:”)+minute
timevalue +=((second < 10) ? “:0″:”:”)+second
timevalue +=((hour >12 ) ? ” PM”:” AM”)
var convertHour = DifferHour
var convertMinute = DifferMinute
var convertSecond = DifferSecond
var Diffms = Tday[key].getTime() – time.getTime()
DifferHour = Math.floor(Diffms / daysms)
Diffms -= DifferHour * daysms
DifferMinute = Math.floor(Diffms / hoursms)
Diffms -= DifferMinute * hoursms
DifferSecond = Math.floor(Diffms / Secondms)
Diffms -= DifferSecond * Secondms
var dSecs = Math.floor(Diffms / microsecond)

if(convertHour != DifferHour) a=”<font color=red>”+DifferHour+”</font>天”;
if(convertMinute != DifferMinute) b=”<font color=red>”+DifferMinute+”</font>时”;
if(convertSecond != DifferSecond) c=”<font color=red>”+DifferSecond+”</font>分”
d=”<font color=red>”+dSecs+”</font>秒”
if (DifferHour>0) {a=a}
else {a=”}
document.getElementById(“leftTime”+key).innerHTML = a + b + c + d; //显示倒计时信息

}
</script>
<div id=”sales”>
<h1><a href=”../search.php?intro=promotion”><img src=”images/more.gif” /></a></h1>
<div>
<!–{foreach from=$promotion_goods key=key item=goods name=”promotion_foreach”}–>
{if $smarty.foreach.promotion_foreach.index <= 3}
<div>
<a href=”{$goods.url}”><img src=”{$goods.thumb}” border=”0″ alt=”{$goods.name|escape:html}”/></a><br />
<p><a href=”{$goods.url}” title=”{$goods.name|escape:html}”>{$goods.short_name|escape:html}</a></p>
{$lang.promote_price}<font>{$goods.promote_price}</font><br><font id=”leftTime{$key}”>{$lang.please_waiting}</font>
</div>
{/if}
<script>
Tday[{$key}] = new Date(“{$goods.gmt_end_time}”);
window.setInterval(function()
{clock({$key});}, 1000);
</script>
<!–{/foreach}–>
</div>
</div>

<!– {/if} –>

以上方法是在官方默认模板下实现的，如果你的是其他模板，有选择的把里面的一些代码挑出来增加（或修改）到你的recommend_promotion.lbi里即可。