JavaScript实现浏览器状态栏实时显示时间

完整代码示例

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<TITLE>状态栏时间显示</TITLE>
</HEAD>
<script language="JavaScript">
var timerID = null;
var timerRunning = false;
function stopclock (){
  if(timerRunning)
    clearTimeout(timerID);
  timerRunning = false;
}
function showtime () {
  var now = new Date();
  var hours = now.getHours();
  var minutes = now.getMinutes();
  var seconds = now.getSeconds()
  var timeValue = " " + ((hours >12) ? hours -12 :hours)
  timeValue += ((minutes < 10) ? ":0" : ":") + minutes
  timeValue += ((seconds < 10) ? ":0" : ":") + seconds
  timeValue += (hours >= 12) ? " 下午" : " 上午"
  window.status = timeValue;
  timerID = setTimeout("showtime()",1000);
  timerRunning = true;
}
function startclock () {
  stopclock();
  showtime();
}
</script>
<body bgcolor="#336699" topmargin="0" leftmargin="0" onLoad="startclock()">请看左下角！状态栏有时间显示！</BODY>
</HTML>