代码如下：
<script> function tick() { var hours, minutes, seconds, xfile; var intHours, intMinutes, intSeconds; var today; today = new Date(); intHours = today.getHours(); intMinutes = today.getMinutes(); intSeconds = today.getSeconds(); if (intHours == 0) { hours = "12:"; xfile = "午夜"; } else if (intHours < 12) { hours = intHours+":"; xfile = "上午"; } else if (intHours == 12) { hours = "12:"; xfile = "正午"; } else { intHours = intHours - 12 hours = intHours + ":"; xfile = "下午"; } if (intMinutes < 10) { minutes = "0"+intMinutes+":"; } else { minutes = intMinutes+":"; } if (intSeconds < 10) { seconds = "0"+intSeconds+" "; } else { seconds = intSeconds+" "; } timeString = xfile+hours+minutes+seconds; Clock.innerHTML = timeString; window.setTimeout("tick();", 100); } window.onload = tick; </script> <div id="Clock" align="center" style="font-size: 20; color:#000000"></div>