怎么实现当前时间显示并不刷新实时更新？求大神帮帮忙

如何实现当前时间显示并不刷新实时更新？求大神帮帮忙！
如题，麻烦知道的告知下小弟，最好附上代码！谢谢！

------解决方案--------------------

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<script type="text/javascript">function startTime(){var today=new Date()var h=today.getHours()var m=today.getMinutes()var s=today.getSeconds()// add a zero in front of numbers<10m=checkTime(m)s=checkTime(s)document.getElementById('txt').innerHTML=h+":"+m+":"+st=setTimeout('startTime()',500)}function checkTime(i){if (i<10)   {i="0" + i}  return i}</script><div id="txt"></div><br><font color="#e78608">------解决方案--------------------</font><br>

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