??<script?type="text/javascript">??
?
???//獲取顯示秒數(shù)的元素，通過定時(shí)器來更改秒數(shù)。
??????clearTimeout(i,6000);
??????setTimeout(mycount,100);
??????var?num=6;??
??????function?mycount()
??????{??
??????????num=num-1;
??????????document.getElementById("Lower").innerHTML=num;
??????i=setTimeout(mycount,1000);
??????}
???//通過window的location和history對(duì)象來控制網(wǎng)頁的跳轉(zhuǎn)。
???
???
?</script>
請(qǐng)幫忙看下面這段代碼為什么不能倒計(jì)時(shí)？
紀(jì)行川
2016-03-23 11:33:57
