Question

我想用这种格式转换字符串日期＆＃34; 3/25/2018 11:51:46 PM＆＃34; 到这样的24小时语言环境格式＆＃34; 10/05/2018在08:51:46＆＃34; （法文格式）

当我插入这种日期＆＃34; 3/25/2018 11:51:46 PM＆＃34;我得到了这个＆＃34; 10/05/2018在08:51:46＆＃34;

这是我目前的代码：

＆＃13;

String.prototype.toDate = function(format) {
  var normalized = this.replace(/[^a-zA-Z0-9]/g, '-');
  var normalizedFormat = format.toLowerCase().replace(/[^a-zA-Z0-9]/g, '-');
  var formatItems = `enter code here`
  normalizedFormat.split('-');
  var dateItems = normalized.split('-');

  var monthIndex = formatItems.indexOf("mm");
  var dayIndex = formatItems.indexOf("dd");
  var yearIndex = formatItems.indexOf("yyyy");
  var hourIndex = formatItems.indexOf("hh");
  var minutesIndex = formatItems.indexOf("ii");
  var secondsIndex = formatItems.indexOf("ss");

  var today = new Date();

  var year = yearIndex > -1 ? dateItems[yearIndex] : today.getFullYear();
  var month = monthIndex > -1 ? dateItems[monthIndex] - 1 : today.getMonth() - 1;
  var day = dayIndex > -1 ? dateItems[dayIndex] : today.getDate();

  var hour = hourIndex > -1 ? dateItems[hourIndex] : today.getHours();
  var minute = minutesIndex > -1 ? dateItems[minutesIndex] : today.getMinutes();
  var second = secondsIndex > -1 ? dateItems[secondsIndex] : today.getSeconds();

  if ((this.split(" ")[2] == "PM") && hour < 12) {
    hour = hour + 12;
  } else if ((this.split(" ")[2] == "AM") && hour == 12) {
    hour = hour - 12;
  }

  console.log(year + " " + month + " " + day + " " + hour + " " + minute + " " + second);
  return new Date(year, month, day, hour, minute, second);
};

logd = "3/25/2018 11:51:46 PM".toDate("mm/dd/yyyy hh:ii:ss");
console.log(logd.toLocaleString());

＆＃13;

Answer 1

不确定为什么每个人都想使用图书馆，为什么不只是混合使用toLocaleDateString和toLocaleTimeString：

＆＃13;

var options = { hour12: false };
var date  = new Date("3/25/2018 11:51:46 PM");
console.log(`${date.toLocaleDateString("fr-FR")} ${date.toLocaleTimeString("fr-FR", options)}`);

// or just use toLocaleString:

console.log(date.toLocaleString("fr-FR", options));

＆＃13;

Answer 2

使用Moment.JS，一个基于日期和时间的项目的强大工具：

https://momentjs.com/

你可以在你的用例和一些样本

之下

console.log(moment().format('DD/MM/YYYY [at] HH:mm:ss'))
console.log(moment().format('MMMM Do YYYY, h:mm:ss a'));
console.log(moment().format('dddd'));
console.log(moment().format("MMM Do YY"));
console.log(moment().format('YYYY [escaped] YYYY'));
console.log(moment().format());

<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.22.1/moment-with-locales.min.js"></script>

在JS中将12h格式转换为24h格式

2 个答案: