<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>当前系统时间</title>
<link rel="stylesheet" href="style.css" />
<script language="javascript" type="text/javascript">
window.onload = function(){
showTime();
};
function checkTime(i){ //补位处理
if(i<10){
i="0"+i;
}
else{return i;}
}
function showTime(){
var now=new Date();
var year=now.getFullYear();
var month=now.getMonth();
var day=now.getDate();
var h=now.getHours();
var m=now.getMinutes() ;
var s= now.getSeconds() ;
m=checkTime(m);
s=checkTime(s);
var weekday=new Array(7);
weekday[0]="星期日";
weekday[1]="星期一";
weekday[2]="星期二";
weekday[3]="星期三";
weekday[4]="星期四";
weekday[5]="星期五";
weekday[6]="星期六";
document.getElementById("show").innerHTML=""+year+"年"+month+"月"+day+"日 "+weekday[now.getDay()]+h+":"+m+":"+s;
t=setTimeout('showTime()',1000);
/*t=setTimeout(showTime,1000);也可以,同样效果*/
/*t=setTimeout(showTime(),1000);不行,直接调用了函数的结果(也就是一个固定值),一开始就跑出了结果然后赋值给了t,相当于t=setTimeout(运行程序时的时间,1000)*/
}
</script>
</head>
<body>
<div class="content1">
<div id="show">显示时间的位置</div>
</div>
</body>
</html>