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js输出当前系统时间

2017-05-13 17:12 162 查看
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>当前系统时间</title>

</head>
<body>
<div class="content1">
<div id="show">显示时间的位置</div>
</div>
</body>
</html>
<script language="javascript" type="text/javascript">
window.onload = function(){
showTime();
}
function checkTime(i){
if (i<10) {
i="0" + i;
}
return i;
}
function showTime(){
var now=new Date();
var year=now.getFullYear();
var month=now.getMonth()+1;
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()',500)
}
</script>
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