JS在页面中显示一个时钟
<html><head><script type="text/javascript">function startTime(){var today=new Date()var h=today.getHours()var m=today.getMinutes()var s=today.getSeconds()m=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></head><body onload="startTime()"><div id="txt"></div></body></html>