I have two strings that I'd like to compare as dates using moment's 'isBefore'. I tried this:
//doc.id = '18-08-2020'
//tomorrowDate = '21-07-2020'
const convertedItem = moment(doc.id, 'DD-MM-YYYY')
if (moment(tomorrowDate).isBefore(convertedItem)) //should yield true
...
You need to specify the format of both tomorrowDate and doc.id as 'dd-mm-yyyy'
moment(tomorrowDate, 'dd-mm-yyyy').isBefore(moment(doc.id, 'dd-mm-yyyy'))
Related
I am using moment-timezone and I am trying to format the date
like this:
moment('dic. 23 2020 11:00').format('YYYY-MM-DD HH:mm');
I am getting that it's not valid?
any idea why?
Try specifying the format parameter, after specifying the locale info. Have a look at this
const moment = require("moment");
require("moment/min/locales.min");
moment.locale("es");
const result = moment("dic. 23 2020 11:00", "MMM[.] DD YYYY hh:mm").format("YYYYMM-DD HH:mm");
console.log(result);
I convert date into UTC format but day(number) is showing day before
moment('2020-3-27').utc().format('YYYY-MM-DDTHH:mm');
result = 2020-03-26T18:30
The usage pattern seems incorrect.
You can try this:
var res = moment.utc("2020-3-27", "YYYY-M-DD").format("YYYY-MM-DDTHH:mm");
console.log(res);
<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.22.2/moment.min.js"></script>
The ISO week numbers are not right when trying to display them on the x-axis using tickformat.
var parseDate = d3.time.format("%Y%W").parse;
var x = d3.time.scale().range([0, width]);
x.domain([parseDate("201552"), parseDate("201602")]);
var xAxis = d3.svg.axis().scale(x)
.orient("bottom")
.ticks(d3.time.monday,1)
.tickFormat(d3.time.format("%W"))
This works fine with most of the scenario except with years that have 53 weeks.
Example: from week 201552 to week 201602. In this scenario it always skips week 53 so the the tick I get are [52, 01, 02]. although the expected output is [52,53,01,02]. Here is my code
I also tried parsing the date string using momentjs since I face this problem skip week in d3.time.format
This is the modified code using momentjs to parse the date:
var parseDate = function(d){
return moment(d, "YYYYWW").toDate();
}
x.domain([parseDate("201552"), parseDate("201602")]);
var MultiFormat = d3.time.format.multi([
["%W", function(d) {
return moment(d).isoWeek();
}],
]);
var xAxis_weeks = d3.svg.axis().scale(x)
.orient("bottom")
.ticks(d3.time.monday,1)
.tickFormat( function(d) {return MultiFormat(d);})
Now the output is [51,52,01,02] which also should have been [52,53,01,02]
I am trying to return the month number passing the month name using MomentJS. For example if I pass "July" to moment() I would expect 7 to be returned.
After reading through the docs I tried several different ways, and this way came close...
console.log(moment().month("July"));
In the console, buried in the response I could see this...
_monthsParse: Array[7]
Could anyone please tell me how to return the month number using MomentJS correctly?
Try :
moment().month("July").format("M");
Relevant documentation: http://momentjs.com/docs/#/get-set/month/
alert(moment().month("July").format("M"));
<script src="https://momentjs.com/downloads/moment.min.js"></script>
Anybody looking to get month name from month number then you can try :
const number = 1; // 0 = Jan & 11 = Dec
moment().month(number).format("MMM"); // Feb
Use following to get full month name :
const number = 1; // 0 = January & 11 = December
moment().month(number).format("MMMM"); // February
To use simple month number try this:
const month = 2 //Feb
moment(month, 'M').format('MMMM');
##get month name in moment js with node js
moment() give today date
format("DD-MMMM-YYYY") / output 18-May-2020
format("DD-MM-YYYY") / output 18-05-2020
- sperator you can use /
```
var moment = require('moment');
m_date = moment().format("DD-MMMM-YYYY");
console.log("moment date :", m_date)
```
##output
```
moment date : 18-May-2020
```
Read Officail Docdescription here
I need to standardise and compare date/time fields that are in differnt timezones. eg How do you find the time difference between the following two times?...
"18-05-2012 09:29:41 +0800"
"18-05-2012 09:29:21 +0900"
What's the best way to initialise standard varaibles with the date/time?
The output needs to display the difference and normalised data in a timezone (eg +0100) that is different to the incoming values and different to the local environment.
Expected Output:
18-05-2012 02:29:41 +0100
18-05-2012 01:29:21 +0100
Difference: 01:00:20
import java.text.SimpleDateFormat
def dates = ["18-05-2012 09:29:41 +0800",
"18-05-2012 09:29:21 +0900"].collect{
new SimpleDateFormat("dd-MM-yyyy HH:mm:ss Z").parse(it)
}
def dayDiffFormatter = new SimpleDateFormat("HH:mm:ss")
dayDiffFormatter.setTimeZone(TimeZone.getTimeZone("UTC"))
println dates[0]
println dates[1]
println "Difference "+dayDiffFormatter.format(new Date(dates[0].time-dates[1].time))
wow. doesn't look readable, does it?
Or, use the JodaTime package
#Grab( 'joda-time:joda-time:2.1' )
import org.joda.time.*
import org.joda.time.format.*
String a = "18-05-2012 09:29:41 +0800"
String b = "18-05-2012 09:29:21 +0900"
DateTimeFormatter dtf = DateTimeFormat.forPattern( "dd-MM-yyyy HH:mm:ss Z" );
def start = dtf.parseDateTime( a )
def end = dtf.parseDateTime( b )
assert 1 == Hours.hoursBetween( end, start ).hours
Solution:
Groovy/Java Date objects are stored as the number of milliseconds after
1970 and so do not contain any timezone information directly
Use Date.parse method to initialise the new date to the specified format
Use SimpleDateFormat class to specify the required output format
Use SimpleDateFormat.setTimeZone to specifiy the timezone of the output
data
By using European/London timezone rather than GMT it will
automatically adjusts for day light savings time
See here for a full list of the options for date time patterns
-
import java.text.SimpleDateFormat
import java.text.DateFormat
//Initialise the dates by parsing to the specified format
Date timeDate1 = new Date().parse("dd-MM-yyyy HH:mm:ss Z","18-05-2012 09:29:41 +0800")
Date timeDate2 = new Date().parse("dd-MM-yyyy HH:mm:ss Z","18-05-2012 09:29:21 +0900")
DateFormat yearTimeformatter = new SimpleDateFormat("dd-MM-yyyy HH:mm:ss Z")
DateFormat dayDifferenceFormatter= new SimpleDateFormat("HH:mm:ss") //All times differences will be less than a day
// The output should contain the format in UK time (including day light savings if necessary)
yearTimeformatter.setTimeZone(TimeZone.getTimeZone("Europe/London"))
// Set to UTC. This is to store only the difference so we don't want the formatter making further adjustments
dayDifferenceFormatter.setTimeZone(TimeZone.getTimeZone("UTC"))
// Calculate difference by first converting to the number of milliseconds
msDiff = timeDate1.getTime() - timeDate2.getTime()
Date differenceDate = new Date(msDiff)
println yearTimeformatter.format(timeDate1)
println yearTimeformatter.format(timeDate2)
println "Difference " + dayDifferenceFormatter.format(differenceDate)