jQuery 将 12 小时 hh:mm AM/PM 转换为 24 小时 hh:mm
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/15083548/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
convert 12-hour hh:mm AM/PM to 24-hour hh:mm
提问by Rowie Po
Is there any simple way to convert 12-hour hh:mm AM/PM to 24-hour hh:mm using jquery?
有没有什么简单的方法可以使用 jquery 将 12 小时 hh:mm AM/PM 转换为 24 小时 hh:mm？
Note: not using any other libraries.
注意：不使用任何其他库。
I have a var time = $("#starttime").val()that returns a hh:mm AM/PM.
我有一个var time = $("#starttime").val()返回 hh:mm AM/PM 的。
回答by devnull69
Try this
尝试这个
var time = $("#starttime").val();
var hours = Number(time.match(/^(\d+)/)[1]);
var minutes = Number(time.match(/:(\d+)/)[1]);
var AMPM = time.match(/\s(.*)$/)[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);
回答by Krzysztof D?browski
This question needs a newer answer :)
这个问题需要一个更新的答案:)
const convertTime12to24 = (time12h) => {
const [time, modifier] = time12h.split(' ');
let [hours, minutes] = time.split(':');
if (hours === '12') {
hours = '00';
}
if (modifier === 'PM') {
hours = parseInt(hours, 10) + 12;
}
return `${hours}:${minutes}`;
}
console.log(convertTime12to24('01:02 PM'));
console.log(convertTime12to24('05:06 PM'));
console.log(convertTime12to24('12:00 PM'));
console.log(convertTime12to24('12:00 AM'));回答by Steve Tauber
I had to do something similar but I was generating a Dateobject so I ended up making a function like this:
我不得不做类似的事情，但我正在生成一个Date对象，所以我最终制作了一个这样的函数：
function convertTo24Hour(time) {
var hours = parseInt(time.substr(0, 2));
if(time.indexOf('am') != -1 && hours == 12) {
time = time.replace('12', '0');
}
if(time.indexOf('pm') != -1 && hours < 12) {
time = time.replace(hours, (hours + 12));
}
return time.replace(/(am|pm)/, '');
}
I think this reads a little easier. You feed a string in the format h:mm am/pm.
我觉得这读起来容易一些。您以 h:mm am/pm 格式输入字符串。
var time = convertTo24Hour($("#starttime").val().toLowerCase());
var date = new Date($("#startday").val() + ' ' + time);
Examples:
例子：
$("#startday").val('7/10/2013');
$("#starttime").val('12:00am');
new Date($("#startday").val() + ' ' + convertTo24Hour($("#starttime").val().toLowerCase()));
Wed Jul 10 2013 00:00:00 GMT-0700 (PDT)
$("#starttime").val('12:00pm');
new Date($("#startday").val() + ' ' + convertTo24Hour($("#starttime").val().toLowerCase()));
Wed Jul 10 2013 12:00:00 GMT-0700 (PDT)
$("#starttime").val('1:00am');
new Date($("#startday").val() + ' ' + convertTo24Hour($("#starttime").val().toLowerCase()));
Wed Jul 10 2013 01:00:00 GMT-0700 (PDT)
$("#starttime").val('12:12am');
new Date($("#startday").val() + ' ' + convertTo24Hour($("#starttime").val().toLowerCase()));
Wed Jul 10 2013 00:12:00 GMT-0700 (PDT)
$("#starttime").val('3:12am');
new Date($("#startday").val() + ' ' + convertTo24Hour($("#starttime").val().toLowerCase()));
Wed Jul 10 2013 03:12:00 GMT-0700 (PDT)
$("#starttime").val('9:12pm');
new Date($("#startday").val() + ' ' + convertTo24Hour($("#starttime").val().toLowerCase()));
Wed Jul 10 2013 21:12:00 GMT-0700 (PDT)
回答by djangonaut
Here my solution including seconds:
这里我的解决方案包括秒：
function convert_to_24h(time_str) {
// Convert a string like 10:05:23 PM to 24h format, returns like [22,5,23]
var time = time_str.match(/(\d+):(\d+):(\d+) (\w)/);
var hours = Number(time[1]);
var minutes = Number(time[2]);
var seconds = Number(time[3]);
var meridian = time[4].toLowerCase();
if (meridian == 'p' && hours < 12) {
hours += 12;
}
else if (meridian == 'a' && hours == 12) {
hours -= 12;
}
return [hours, minutes, seconds];
};
回答by Bimal Das
This will help :
这将有助于：
function getTwentyFourHourTime(amPmString) {
var d = new Date("1/1/2013 " + amPmString);
return d.getHours() + ':' + d.getMinutes();
}
Example :
例子 ：
getTwentyFourHourTime("8:45 PM"); // "20:45"
getTwentyFourHourTime("8:45 AM"); // "8:45"
Update :Note : There should be a space for timestring between "Time" and "am/pm".
更新：注意：“时间”和“上午/下午”之间应该有一个时间字符串的空格。
回答by ashish chaturvedi
function timeConversion(s) {
var time = s.toLowerCase().split(':');
var hours = parseInt(time[0]);
var _ampm = time[2];
if (_ampm.indexOf('am') != -1 && hours == 12) {
time[0] = '00';
}
if (_ampm.indexOf('pm') != -1 && hours < 12) {
time[0] = hours + 12;
}
return time.join(':').replace(/(am|pm)/, '');
}
Call the function with string params:
使用字符串参数调用函数：
timeConversion('17:05:45AM')
or
或者
timeConversion('07:05:45PM')
回答by Maria
In case you're looking for a solution that converts ANY FORMAT to 24 hours HH:MM correctly.
如果您正在寻找将任何格式正确转换为 24 小时 HH:MM 的解决方案。
function get24hTime(str){
str = String(str).toLowerCase().replace(/\s/g, '');
var has_am = str.indexOf('am') >= 0;
var has_pm = str.indexOf('pm') >= 0;
// first strip off the am/pm, leave it either hour or hour:minute
str = str.replace('am', '').replace('pm', '');
// if hour, convert to hour:00
if (str.indexOf(':') < 0) str = str + ':00';
// now it's hour:minute
// we add am/pm back if striped out before
if (has_am) str += ' am';
if (has_pm) str += ' pm';
// now its either hour:minute, or hour:minute am/pm
// put it in a date object, it will convert to 24 hours format for us
var d = new Date("1/1/2011 " + str);
// make hours and minutes double digits
var doubleDigits = function(n){
return (parseInt(n) < 10) ? "0" + n : String(n);
};
return doubleDigits(d.getHours()) + ':' + doubleDigits(d.getMinutes());
}
console.log(get24hTime('6')); // 06:00
console.log(get24hTime('6am')); // 06:00
console.log(get24hTime('6pm')); // 18:00
console.log(get24hTime('6:11pm')); // 18:11
console.log(get24hTime('6:11')); // 06:11
console.log(get24hTime('18')); // 18:00
console.log(get24hTime('18:11')); // 18:11
回答by Ismael Terreno
With this you can have the following: Sample Input: 07:05:45PMSample Output: 19:05:45
有了它，您可以拥有以下内容： 样本输入：07: 05: 45PM样本输出：19: 05: 45
function timeConversion(s) {
let output = '';
const timeSeparator = ':'
const timeTokenType = s.substr(s.length - 2 , 2).toLowerCase();
const timeArr = s.split(timeSeparator).map((timeToken) => {
const isTimeTokenType =
timeToken.toLowerCase().indexOf('am') > 0 ||
timeToken.toLowerCase().indexOf('pm');
if(isTimeTokenType){
return timeToken.substr(0, 2);
} else {
return timeToken;
}
});
const hour = timeArr[0];
const minutes = timeArr[1];
const seconds = timeArr[2];
const hourIn24 = (timeTokenType === 'am') ? parseInt(hour) - 12 :
parseInt(hour) + 12;
return hourIn24.toString()+ timeSeparator + minutes + timeSeparator + seconds;
}
Hope you like it !
希望你喜欢 ！
回答by nfeuerhelm
I needed this function for a project. I tried devnull69's but I was having some trouble, mostly because the string input is very specific for the am/pm section and I would've needed to change my validation. I messed around with Adrian P.'s jsfiddle and ended up with a version that seems to work better for a larger variety of date formats. Here is the fiddle: http://jsfiddle.net/u91q8kmt/2/.
我需要一个项目的这个功能。我尝试了 devnull69，但遇到了一些问题，主要是因为字符串输入非常特定于 am/pm 部分，我需要更改我的验证。我弄乱了 Adrian P. 的 jsfiddle，最终得到了一个似乎更适用于更多日期格式的版本。这是小提琴：http: //jsfiddle.net/u91q8kmt/2/。
Here is the function:
这是函数：
function ConvertTimeformat(format, str) {
var hours = Number(str.match(/^(\d+)/)[1]);
var minutes = Number(str.match(/:(\d+)/)[1]);
var AMPM = str.match(/\s?([AaPp][Mm]?)$/)[1];
var pm = ['P', 'p', 'PM', 'pM', 'pm', 'Pm'];
var am = ['A', 'a', 'AM', 'aM', 'am', 'Am'];
if (pm.indexOf(AMPM) >= 0 && hours < 12) hours = hours + 12;
if (am.indexOf(AMPM) >= 0 && 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;
if (format == '0000') {
return (sHours + sMinutes);
} else if (format == '00:00') {
return (sHours + ":" + sMinutes);
} else {
return false;
}
}
回答by Andrzej Staniszewski
based on meeting CodeSkill #1
基于满足CodeSkill #1
validation of format should be another function :)
格式验证应该是另一个功能:)
function convertTimeFrom12To24(timeStr) {
var colon = timeStr.indexOf(':');
var hours = timeStr.substr(0, colon),
minutes = timeStr.substr(colon+1, 2),
meridian = timeStr.substr(colon+4, 2).toUpperCase();
var hoursInt = parseInt(hours, 10),
offset = meridian == 'PM' ? 12 : 0;
if (hoursInt === 12) {
hoursInt = offset;
} else {
hoursInt += offset;
}
return hoursInt + ":" + minutes;
}
console.log(convertTimeFrom12To24("12:00 AM"));
console.log(convertTimeFrom12To24("12:00 PM"));
console.log(convertTimeFrom12To24("11:00 AM"));
console.log(convertTimeFrom12To24("01:00 AM"));
console.log(convertTimeFrom12To24("01:00 PM"));