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这个简单的函数是用来显示时间和更新每秒使用setInterval()
,时间显示但不更新,我也尝试从身体的onload调用调用函数,它是相同的。setInterval()定时器不工作
<script language="JavaScript" type="text/javascript">
var currentTime = new Date();
function currentTimeStrings()
{
var hours = currentTime.getHours();
var hoursToString = hours;
if (hoursToString>12)
{
hoursToString = hoursToString-1;
}
switch (hoursToString)
{
case 13:
hoursToString = 2;
break;
case 14:
hoursToString = 3;
break;
case 15:
hoursToString = 4;
break;
case 16:
hoursToString = 5;
break;
case 17:
hoursToString = 6;
break;
case 18:
hoursToString = 7;
break;
case 19:
hoursToString = 8;
break;
case 20:
hoursToString = 9;
break;
case 21:
hoursToString = 10;
break;
case 22:
hoursToString = 11;
break;
case 23:
hoursToString = 12;
break;
default:
hoursToString = hoursToString;
break;
}
var minutes = currentTime.getMinutes();
var seconds = currentTime.getSeconds();
document.getElementById("timeDisp").innerHTML=hoursToString + ':' + minutes + ':' + seconds;
}
setInterval(currentTimeStrings,1000);
</script>
现在,它的工作,但有一个问题:我还以为外面并不重要,因为它仅仅是一个全局变量。 – Reece
@ user3280654:它是全局的,可以被访问,但是当你调用'var currentTime = new Date();'和'保持相同的值'时,它的值只会被设置一次,从不更新。 –