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js获取系统时间并格式化

2017-06-08 22:13 477 查看
获取系统时间,并格式化

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>js显示当前时间</title>
</head>
<body>
<div style="width: 200px;height:200px;" onclick="getNowFormatDate();">
显示当前时间
</div>
<script type="text/javascript">
//获取当前系统时间
function getNowFormatDate() {
var date = new Date();
var strMonth = date.getMonth() + 1;
var strDate = date.getDate();
var strHour = date.getHours();
var strMin = date.getMinutes();
var strSec = date.getSeconds();
if (strMonth >= 1 && strMonth <= 9) {
strMonth = "0" + strMonth;
}
if (strDate >= 0 && strDate <= 9) {
strDate = "0" + strDate;
}
if (strHour >= 0 && strHour <= 9) {
strHour = "0" + strHour;
}
if (strMin >= 0 && strMin <= 9) {
strMin = "0" + strMin;
}
if (strSec >= 0 && strSec <= 9) {
strSec = "0" + strSec;
}
var currentdate = date.getFullYear() + '-'
+ strMonth + '-'
+ strDate + ' '
+ strHour + ':'
+ strMin + ':'
+ strSec;
alert(currentdate);
}
</script>
</body>
</html>


显示效果

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