Question

我的时间格式如下：12/16/2011 3:49:37 PM我得到的格式为：

var newDate = new Date(timeFromat);
timeFormat = newDate.toLocaleString();

我的实际格式是格林尼治标准时间，我使用上面的代码将其转换为我的预订时间。

我希望将其更改为24小时格式，因此我希望此日期更改为：12/16/2011 15:49:37并且我想在javascript中执行此操作。

这就是我做的事情

var firstPartOftimeFormat = timeFormat.substring(0,9);
var secondPartOftimeFormat = timeFormat.substring(10,20);

但是当日期格式如下时它不起作用：3/16/2011。但以下部分有效。

var time = $("#starttime").val();
var hours = Number(secondPartOftimeFormat.match(/^(\d+)/)[1]);
var minutes = Number(secondPartOftimeFormat.match(/:(\d+)/)[1]);
var AMPM = secondPartOftimeFormat.match(/\s(.*)$/)[1];
if(AMPM == "PM" && hours<12) hours = hours+12;
if(AMPM == "AM" && hours==12) hours = hours-12;
var sHours = hours.toString();
var sMinutes = minutes.toString();
if(hours<10) sHours = "0" + sHours;
if(minutes<10) sMinutes = "0" + sMinutes;
alert(sHours + ":" + sMinutes);

你能建议其他方法吗？

感谢

Answer 1

使用System.Diagnostics.ProcessStartInfo psi = new System.Diagnostics.ProcessStartInfo(); psi.FileName = @"cmd"; psi.Arguments = "/C start notepad.exe"; psi.WindowStyle = System.Diagnostics.ProcessWindowStyle.Hidden; System.Diagnostics.Process.Start(psi);

选项1 - 使用区域设置

dateObj.toLocaleString([locales[, options]])

选项2 - 使用选项

var date = new Date();
console.log(date.toLocaleString('en-GB'));

Answer 2

您可以使用以下代码获取24小时格式

new Date("3/16/2011 3:49:37 PM").getHours() // 15
new Date("3/16/2011 3:49:37 PM").getMinutes() // 49

Answer 3

获取 24 小时格式：

const date = new Date();
console.log(date.toLocaleTimeString([], {
    hourCycle: 'h23',
    hour: '2-digit',
    minute: '2-digit'
}));

Answer 4

试试这个：

// British English uses day-month-year order and 24-hour time without AM/PM
console.log(date.toLocaleString('en-GB'));
// → "20/12/2012 03:00:00"

参考：https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date/toLocaleString

Answer 5

尝试一下，它对我来说完全正常。它提供了24小时的时间格式

var Date= new Date();

var TimeFormat= date.toLocaleString('en-GB');

您的答案将是 2018年12月14日星期五18:00 GMT + 0530（印度标准时间）

Answer 6

hourCycle: 'h23' 是完美的

感谢https://stackoverflow.com/users/12425695/luis-serrano

new Date().toLocaleString('ru-RU', {
    timeZone: 'Europe/Moscow',
    hourCycle: 'h23',
    year: "numeric",
    month: "2-digit",
    day: "2-digit",
    hour: "2-digit",
    minute: "2-digit",
    second: "2-digit"
});

Answer 7

尝试此功能

<script type="text/javascript">
    <!--
    function displayTime() {
        var currentDate = new Date();
        var currentHour = currentDate.getHours();
        var currentMinute = currentDate.getMinutes();
        var currentSecond = currentDate.getSeconds();
        document.getElementById('timeDiv').innerHTML = 'Hour: ' + currentHour + ' Minute: ' + currentMinute + ' Second: ' + currentSecond;
    }

    window.onload = function() {
        window.setInterval('displayTime()', 1000);
    }
    // -->
</script>

Answer 8

试试这个

var d = new Date();
alert(d.getHours());
alert(d.getMinutes());

Answer 9

Using some resources
Date/toLocaleDateString^_MDN
Date/toLocaleTimeString^_MDN

const lang = navigator.language || navigator.languages[0];
const date = new Date();
const date_locale = date.toLocaleDateString(lang, {
  day: 'numeric',
  month: 'short',
  year: 'numeric'
});
const time_locale = date.toLocaleTimeString(lang);

const formatted = `${date_locale} ${time_locale}`;
console.log(formatted)

above we deduce the current language from the Window's Navigator object.
In case lang ends up being undefined it's perfectly fine, defaults will be used.

To force a desired format, you can manually set lang to i.e: 'en-US', 'eu', 'en-GB', 'de-DE', 'hr-HR' etc...

Here's an example for time:

const date = new Date();
console.log(date.toLocaleTimeString('en-US')) // 12h
console.log(date.toLocaleTimeString('en-GB')) // 24h
console.log(date.toLocaleTimeString())        // Default

在javascript中将时间格式更改为24小时

9 个答案: