时间显示

<script>
    // 正常时间显示
    function startTimer(){
        var today=new Date();
        var h=today.getHours();
        var m=today.getMinutes();
        var s=today.getSeconds();
        m=m<10?"0"+m:m;
        s=s<10?'0'+s:s;
        $('#time').html(h+":"+m+":"+s);
        t=setTimeout(function(){startTimer()},500);
    }
</script>