获取当前年月日时分秒方法

Java

 public static void main(String[] args) throws ParseException {
        Calendar now = Calendar.getInstance();
        System.out.println("年: " + now.get(Calendar.YEAR));
        System.out.println("月: " + (now.get(Calendar.MONTH) + 1) + "");
        System.out.println("日: " + now.get(Calendar.DAY_OF_MONTH));
        System.out.println("时: " + now.get(Calendar.HOUR_OF_DAY));
        System.out.println("分: " + now.get(Calendar.MINUTE));
        System.out.println("秒: " + now.get(Calendar.SECOND));
        System.out.println("当前时间毫秒数：" + now.getTimeInMillis());
        System.out.println(now.getTime());  

        Date d = new Date();
        System.out.println(d);
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        String dateNowStr = sdf.format(d);
        System.out.println("格式化后的日期：" + dateNowStr);  

        String str = "2012-1-13 17:26:33";  //要跟上面sdf定义的格式一样
        Date today = sdf.parse(str);
        System.out.println("字符串转成日期：" + today);
    }  

JS

// y 年份  m 月份  d  日期
var date=new Date;
var y = date.getFullYear()
var m = date.getMonth() + 1
m = m < 10 ? '0' + m : m
var d = time.getDate()
d = d < 10 ? ('0' + d) : d

原文地址：https://www.cnblogs.com/xiaoyinger/p/12024240.html