So i tried to get the meridiems on luxon.js because i'm going to move my discord.js bot that is using momentjs to luxonjs because i like it more. But i got the problem that i just can't figure out how to get the meridiems of the timezone that i especify, could you help me out?
I've tried
Info.meridiems()
but i don't know how to use or what do i do with the Info part,
And then i don't understand the parameters that the give in their documentation as an example
Info.meridiems({ locale: 'my' })
it was kinda easy but i will not delete this post if someone needs it.
Basically what i did is to get the date in the format that i wanted
const time = DateTime.local().setZone('tz').toFormat("HHmmss");
in .setZone('tz') you should just put the time zone you want according to the luxon docs.
Then i would just use an if for it
const smartMeridiems = (am, pm) =>{
if(time > 120000){
pm = 'PM'
return pm;
} else{
am = 'AM'
return am;
}
}
And that is basically it
The meridiem for a DateTime can be accessed by the "a" format token:
DateTime.local().setZone(z).toFormat("a") //=> "PM"
The Luxon Info methods are for finding out what the meridiems are called in different human languages.
Related
whenever I'm defining the timeframe being in German session language after changing to English lang. session (and vice versa) I'm getting the:
java.text.ParseException: Unparseable date: "10.10.2018"
Here is the fragment:
Date startDateFormatted = DateUtils.convertDateToMinusDayNumber(cal, dayRange);
Date endDateFormatted = new Date();
if (StringUtils.isNotEmpty(startDate) && StringUtils.isNotEmpty(endDate))
{
try
{
String datePattern = getLocalizedString("dd.MM.yyyy"); //
startDateFormatted = new SimpleDateFormat(datePattern).parse(startDate); // exception is throwing on this line
endDateFormatted = new SimpleDateFormat(datePattern).parse(endDate);
}
catch (final Exception e)
{
LOG.error(ERROR_DATE_PARSING, e);
}
}
java.time
I recommend you use java.time, the modern Java date and time API, for your date work.
String datePattern = "dd.MM.uuuu";
DateTimeFormatter dateFormatter = DateTimeFormatter.ofPattern(datePattern);
String startDateString = "10.10.2018";
LocalDate startDate = LocalDate.parse(startDateString, dateFormatter);
System.out.println(startDate);
Output:
2018-10-10
If you want to support different date formats for different locales, let Java handle that part for you:
String datePattern = DateTimeFormatterBuilder.getLocalizedDateTimePattern(
FormatStyle.MEDIUM, null, IsoChronology.INSTANCE, Locale.GERMAN);
German locale works with your example string of 10.10.2018. For UK locale, for example, a string like 10 Oct 2018 would be required instead, as Britons would typically expect.
What went wrong in your code?
We cannot tell from the information and code that you have provided exactly what happened. A couple of good guesses are:
As Arvind Kumar Avinash said in a comment, getLocalizedString() may be causing trouble. You may print datePattern to check. Localization is something you do to strings that you display to the user. Trying to localize a format pattern string for a formatter is probably plain wrong, so you should leave out that method call. That the error occurs when changing language seems to support this possibility.
There may be unexpected non-printing characters in your string. One way to check would be to print startDate.length(). If the length is greater than 10, there are more characters than the 10 chars in 10.10.2018.
Link
Oracle tutorial: Date Time explaining how to use java.time.
Quite simply, this is my code:
http://jsfiddle.net/NibblyPig/k9zb4ysp/
moment.locale('en-GB');
var d = moment('22/12/2019');
alert(d);
I would expect this to parse, however it says invalid date.
I have referenced moment.js and the locale/en-gb.js
I'm writing a global control so the date may come in in a variety of formats.
If I put in a variety of American dates they all work, for example 12/12/2019, 12/12/2019 23:04 etc.
However the locale command does not appear to do anything and I cannot get a single date to parse. What am I doing wrong?
You need to pass the format as the second argument for moment(), as discussed here:
moment.locale('en-GB');
var d = moment('22/12/2019', 'DD/MM/YYYY');
alert(d);
https://jsfiddle.net/a4gu6kfz/
From the docs:
If you know the format of an input string, you can use that to parse a
moment.
moment("12-25-1995", "MM-DD-YYYY");
I think that there is no need to write your own complex logic to parse your input, you can use moment(String, String) (or moment(String, String[], String, Boolean)), as suggested by Thales Minussi's answer.
moment(String) is the good choice only if your input is in ISO 8601 or RFC 2822 compliant form.
In your case, you can probably use Localized formats listed in the format section of the docs. If you have a list of possible formats, I think that the best choice is tho use moment(String, String[]).
Please note that, by default: Moment's parser is very forgiving, so using default Forgiving Mode will handle "any" character as separator.
Here a live sample:
moment.locale('en-GB');
['22/12/2019', '22/12/2019 15:00',
'22-12-2019', '22-12-2019 15:00',
'1-3-2019', '1-12-2019', '22-1-2019'
].forEach((elem) => {
var d = moment(elem, 'L LT');
console.log(d.format());
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.24.0/moment.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.24.0/locale/en-gb.js"></script>
Still hoping there's a nice moment js way to do this but in the meantime I just bashed this together. Pretty nasty and it will probably go wrong in 80 years or so.
http://jsfiddle.net/NibblyPig/k9zb4ysp/22/
var a = "23/03/19 12:42:21.123";
var datePart = a.substring(0, a.indexOf(" "));
var timePart = a.substring(a.indexOf(" ") + 1);
var dateParts = datePart.split("/");
if (dateParts[0].length == 1) dateParts[0] = "0" + dateParts[0];
if (dateParts[1].length == 1) dateParts[1] = "0" + dateParts[1];
if (dateParts[2].length == 2) {
var threshold = parseInt(new Date().getFullYear().toString().substring(2)) + 10;
if (parseFloat(dateParts[2]) > threshold ) {
dateParts[2] = "19" + dateParts[2];
}
else
{
dateParts[2] = "20" + dateParts[2];
}
}
alert (parseFloat(dateParts[2] + dateParts[1] + dateParts[0] + timePart.replace(/:/g, "").replace(/\./g, "")));
This won't solve every usecase, but in your specific example if you want just a simple date (with no time component) auto-parsed in UK format you can just use the 'L' format string having set the locale to 'en-GB'
Your example with this change (your jsfiddle also)
moment.locale('en-GB');
// just pass 'L' i.e. local date format as a parsing format here
var d = moment('22/12/2019', 'L');
alert(d);
It's quite nice because you get the auto parsing of various formats you wanted for free. For instance this works just the same:
var d = moment('22-12-2019', 'L');
You can return a date using moment.js in a desired format -
return moment(aDateVar).format('DD/MM/YYYY');
I have a date like "Thu Sep 01 2016 00:00:00 GMT+0530 (IST)" which I need to send to server as ISO-8601 utc time. I tried like :
moment(mydate).toISOString()
moment.utc(mydate).toISOString()
moment(mydate).utcOffset("+00:00").toISOString()
but I am getting the result like
2016-08-31T18:30:00.000Z
which is 1day behind my intended time. So what can I do to make moment ignore my local timezone and see it as UTC?
Edit:
The expected output is
2016-09-01T18:30:00.000Z
And no, the initial input isn't a string rather a javascript "new Date()" value.
Reason this happens:
This happens because .toISOString() returns a timestamp in UTC, even if the moment in question is in local mode. This is done to provide consistency with the specification for native JavaScript Date .toISOString()
Solution:
Use the same function and pass true value to it. This will prevent UTC Conversion.
moment(date).toISOString(true)
const date = new Date("2020-12-17T03:24:00");
const dateISOStringUTC = moment(date).toISOString();
const dateISOString = moment(date).toISOString(true);
console.log("Converted to UTC:" + dateISOStringUTC)
console.log("Actual Date value:" + dateISOString)
<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.29.1/moment.min.js"></script>
I take the same problem today and find the solution.
Here is the solution: moment(date,moment.ISO_8601)
var date = new Date();
console.log("Original Date");
console.log(date);
console.log("After Moment Format");
console.log(moment(date,moment.ISO_8601));
Test Execution:
Moment Documentation: MomentJs
I need a regex which takes the string YYYY-MM-DD-XXXX (The last 4 are just for purpose of gender/area) It's mostly important to check the first 8 Digits for a valid birth date.
So far i have this:
/^([0-9]{4})\-([0-9]{2})\-([0-9]{2})\-([0-9]{4})$/
Also i want to check so the input age is at least 18 years old. Would appreciate if somone had some input on how to achieve this.
Edit: The regex above was tested in JS, but should work fine in ASP as well?
I have changed your regex a bit to make it look more authentic
^([1-2]\d{3})\-([0-1][1-9])\-([0-3][0-9])\-([0-9]{4})$
years like 3012 will not pass.
Now you want to find whether a person is 18 years or not.
One approach could be to find the difference between the years of dates provided like this
var str = '1990-09-12-5555';
var res = /^([1-2]\d{3})\-([0-1][1-9])\-([0-3][0-9])\-([0-9]{4})$/.exec(str);
var year_now = new Date().getFullYear();
console.log(year_now-res[1]);
a second approach will be more precise one :
var str = '1990-09-12-5555';
var res = /^([1-2]\d{3})\-([0-1][1-9])\-([0-3][0-9])\-([0-9]{4})$/.exec(str);
var todays_date = new Date();
var birth_date = new Date(res[1],res[2],res[3]);
console.log(todays_date-birth_date);
will output the result in milliseconds. You can do the math to convert it into year
Cheers , Hope that helps !
I suggest using moment.js which provides an easy to use method for doing this.
interactive demo
function validate(date){
var eighteenYearsAgo = moment().subtract("years", 18);
var birthday = moment(date);
if (!birthday.isValid()) {
return "invalid date";
}
else if (eighteenYearsAgo.isAfter(birthday)) {
return "okay, you're good";
}
else {
return "sorry, no";
}
}
To include moment in your page, you can use CDNJS:
<script src="//cdnjs.cloudflare.com/ajax/libs/moment.js/2.4.0/moment.min.js"></script>
Source
The following will match any year with a valid day/month combination, but won't do validation such as checking you've not entered 31 days for February.
^[0-9]{4}\-(0[1-9]|1[012])\-(0[1-9]|[12][0-9]|3[01])\-[0-9]{4}$
Not sure exactly what you're trying to achieve but I'd suggest using a date library for this sort of thing. You could return a message to the user somehow if the entered date fails to parse into an object.
In order to do age validation, you will certainly need to use a library so a regex should only be used for date validation purposes
I'm developing a custom validator of a date input in my workflow form and I get a null after parsing a date this is what I done:
// check dates can be parsed
str_expiryDate = field.form.prop_wfbxTestWorkFlow_NfDate.value;
console.log("Non conformite"+str_expiryDate);
str_reminderDate = field.form.prop_bpm_workflowDueDate.value;
console.log("echeance"+str_reminderDate);
Alfresco.logger.warn("Expiry Date: " + str_expiryDate + " | Reminder Date: " + str_reminderDate);
d_expiryDate = Date.parse(str_expiryDate);
console.log("nfDate"+str_expiryDate);
d_reminderDate = Date.parse(str_reminderDate);
console.log("Date echéance"+d_reminderDate);
and then i get this in console:
Non conformite2013-06-21T00:00:00.000+01:00 echeance2013-06-09T00:00:00.000+01:00
nfDatenull
Date echéancenull
How I can parse these two dates and then compare it? .thanks
Use Alfresco.util.fromISO8601(date)
According to the client-api docs
Convert an ISO8601 date string into a JavaScript native Date object
You are parsing the "value" of a date, not the date itself.
The best way to compare is, imho, using the format YYYYMMDD, and than compare it as a number.
Something like this (there is sure a far more elegant way to do that, but at this time it's the only one that got me):
var indexDate=str_expiryDate.indexOf("-");
var dayDate=str_expiryDate.substring(0, 2);
var monthDate=str_expiryDate.substring(3, 5);
var yearDate=fromData.substring(6, str_expiryDate.length+1);
int dataNew=yearDate+monthDate+dayDate;
and than compare the two dates value.
Obviously check if the index value are correct, I didn't double checked them.
Hope il helps.