<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Date對象</title>
</head>
<body>
<script type="text/javascript">
function formatDate() {
var myDate = new Date();
var year = myDate.getFullYear();
var month = to2(myDate.getMonth()+1);
var day = to2(myDate.getDate());
var hour = to2(myDate.getHours());
var minute = to2(myDate.getMinutes());
var second = to2(myDate.getSeconds());
return year+"-"+month+"-"+day+" "+hour+":"+minute+":"+second;
// document.write(year+"-"+month+"-"+day+" "+hour+":"+minute+":"+second);
}
function to2(m){
if (m<10) {
return '0'+m;
}
return m;
}
function printTime() {
var p = document.getElementById("nowTime");
p.innerText = formatDate();
}
setInterval(printTime,1000);
</script>
</body>
<h1 id="nowTime"></h1>
<script type="text/javascript">
printTime()
</script>
<!--<p id="nowTime"></p>-->
<!--<button onclick="printTime()">顯示時間</button>-->
</html>
