<html><head>
<script>
function setNDateDiff()
{
var nowdate=new Date()
var enddate=new Date("27 May 2012")
datediff=enddate-nowdate
var dayx=1000*60*60*24
var hourx=1000*60*60
var minx=1000*60
var secx=1000
day=Math.floor(datediff/dayx);
hour=parseInt(datediff/hourx-day*24);
min=parseInt(datediff/minx-day*24*60-hour*60);
sec=parseInt(datediff/secx-day*24*60*60-hour*60*60-min*60);
ndatediff="距离考试还有"+day+"天"+(hour<10?'0'+hour:hour)+"小时"+(min<10?'0'+min:min)+"分钟"+(sec<10?'0'+sec:sec)+"秒";
document.write(ndatediff)
}
</script>
</head><body>
<script>
setInterval("setNDateDiff()",1000)
</script>
</body>
</html>这段代码中用document.write()方法为什么不行呢？谁给解释下。
<html><head>
<script>
function setNDateDiff()
{
var nowdate=new Date()
var enddate=new Date("27 May 2012")
datediff=enddate-nowdate
var dayx=1000*60*60*24
var hourx=1000*60*60
var minx=1000*60
var secx=1000
day=Math.floor(datediff/dayx);
hour=parseInt(datediff/hourx-day*24);
min=parseInt(datediff/minx-day*24*60-hour*60);
sec=parseInt(datediff/secx-day*24*60*60-hour*60*60-min*60);
ndatediff=day+"天"+(hour<10?'0'+hour:hour)+"小时"+(min<10?'0'+min:min)+"分钟"+(sec<10?'0'+sec:sec)+"秒";
document.all['result'].innerText = ndatediff;
}
</script>
</head><body>
<script>
setInterval("setNDateDiff()",1000)
</script>
距离考试还有<div id="result"></div>
</body>
</html>