How do you format a Date Time in TypeScript

Question

I ve been having some trouble trying to get a Date object in TypeScript to format the way I want it to    I have a class Module which is defined as   export class Module        constructor public id  number  public name  string  public description  string                    public lastUpdated  Date  public owner  string           getNiceLastUpdatedTime    String            let options  Intl DateTimeFormatOptions                 day   numeric   month   numeric   year   numeric               hour   2-digit   minute   2-digit                      return this lastUpdated toLocaleDateString  en-GB   options          this lastUpdated toLocaleTimeString  en-GB   options             When I call the method with the following code       let date   new Date 1478708162000      09 11 2016 16 16pm  GMT      let module   new Module 1   Test    description   date   test owner        console log module getNiceLastUpdatedTime       I end up with the following printed in the console    9 November 2016 16 16 02 GMT    What I want to see is   09 11 2015 16 16   I ve had a look at the documentation at  https   developer mozilla org en-US docs Web JavaScript Reference Global Objects Date toLocaleDateString  and I still can t see what I m doing wrong  I know this is a JavaScript API documentation but I m pretty sure that s what TypeScript is using under the hood

User · Answer

I had a similar problem and I solved with this   format

User · Answer

You can create pipe inherited from PipeTransform base Then implement transform method   Used in Angular 4 - it s working  Best way to format a date is a pipe   Create your custom pipe like this   import   Pipe  PipeTransform  from   angular core   import   DatePipe   from   angular common     Pipe       name   dateFormat         export class DateFormatPipe extends DatePipe implements PipeTransform       transform value  any  args   any   any             MMM dd yyyy         return super transform value   MMM dd yyyy                and it s used in a TypeScript class like this       my class      export class MyComponent     constructor private  dateFormatPipe DateFormatPipe             formatHereDate            let myDate   this  dateFormatPipe transform new Date     formatting current    date here         you can pass any date type variable

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The best solution for me is the custom pipe from  Kamalakar but with a slight modification to allow passing the format    import   Pipe  PipeTransform  from   angular core   import   DatePipe   from   angular common     Pipe       name   dateFormat         export class DateFormatPipe extends DatePipe implements PipeTransform       transform value  any  format  any   any          return super transform value  format               And then called as    console log  Formatted date    this  dateFormatPipe transform new Date     MMM dd yyyy

User · Answer

Option 1  Momentjs  Install  npm install moment --save  Import  import   as moment from  moment    Usage  let formattedDate    moment yourDate   format  DD-MMM-YYYY HH mm ss    Option 2  Use DatePipe if you are doing Angular  Import  import   DatePipe   from   angular common    Usage  const datepipe  DatePipe   new DatePipe  en-US   let formattedDate   datepipe transform yourDate   DD-MMM-YYYY HH mm ss

User · Answer

One more to add  kamalakar s answer  need to import the same in app module and add DateFormatPipe to providers       import  DateFormatPipe  from    DateFormatPipe        NgModule        declarations                imports              providers   DateFormatPipe

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Update  2020  As pointed by  jonhF in the comments  MomentJs recommends to not use MomentJs anymore  Check https   momentjs com docs  Instead  I m keeping this list with my personal TOP 3 js date libraries for future reference   Date-fns - https   date-fns org  DayJS - https   day js org  JS-Joda - https   js-joda github io js-joda   Old comment I suggest you to use MomentJS With moment you can have lot of outputs  and this one 09 11 2015 16 16 is one of then

User · Answer

This worked for me                 Convert Date type to  YYYY MM DD  string         - AKA ISO format         - It s logical and sortable           - 20200227         param Date eg  new Date          https   stackoverflow com questions 23593052 format-javascript-date-as-yyyy-mm-dd         https   stackoverflow com questions 23593052 format-javascript-date-as-yyyy-mm-dd page 2 amp tab active tab-top             static DateToYYYYMMDD Date  Date   string           let DS  string   Date getFullYear                         0     Date getMonth     1   slice -2                        0    Date getDate    slice -2          return DS         You can certainly add HH MM something like this         static DateToYYYYMMDD HHMM Date  Date   string           let DS  string   Date getFullYear                         0     Date getMonth     1   slice -2                        0    Date getDate    slice -2                        0    Date getHours    slice -2                        0    Date getMinutes    slice -2          return DS

User · Answer

Here is another option for Angular  using own formatting function  - this one is for format    YYYY-mm-dd hh nn ss  -you can adjust to your formats  just re-order the lines and change separators  dateAsYYYYMMDDHHNNSS date   string     return date getFullYear                  -    this leftpad date getMonth     1  2                 -    this leftpad date getDate    2                      this leftpad date getHours    2                      this leftpad date getMinutes    2                      this leftpad date getSeconds    2      leftpad val  resultLength   2  leftpadChar    0    string     return  String leftpadChar  repeat resultLength            String val   slice String val  length       For current time stamp use like this   const curTime   this dateAsYYYYMMDDHHNNSS new Date     console log curTime     Will output e g   2018-12-31 23 00 01

User · Answer

If you want the time out as well as the date you want Date toLocaleString     This was direct from my console    gt  new Date   toLocaleString    gt   11 10 2016  11 49 36 AM    You can then input locale strings and format string to get the precise output you want   https   developer mozilla org en-US docs Web JavaScript Reference Global Objects Date toLocaleString

User · Answer

For Angular you should simply use formatDate instead of the DatePipe  import  formatDate  from   angular common    constructor  Inject LOCALE ID  private locale  string         this dateString   formatDate Date now    yyyy-MM-dd  this locale

User · Answer

function  formatDatetime date  Date  format  string       const  padStart    value  number   string   gt  value toString   padStart 2   0    return format      replace  yyyy g   padStart date getFullYear          replace  dd g   padStart date getDate          replace  mm g   padStart date getMonth     1        replace  hh g   padStart date getHours          replace  ii g   padStart date getMinutes          replace  ss g   padStart date getSeconds        function isValidDate d  Date   boolean       return  isNaN d getTime       export function formatDate date  any   string       var datetime   new Date date       return isValidDate datetime     formatDatetime datetime   yyyy-mm-dd hh ii ss

[javascript] How do you format a Date/Time in TypeScript?

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