How do I format a date as ISO 8601 in moment js

Question

This docs mention moment ISO 8601 as a formatting option  from 2 7 0 - http   momentjs com docs   parsing special-formats    but neither of these work  even 2 7 0    var date   moment    date format moment ISO 8601      error moment format date  moment ISO 8601      error    http   jsfiddle net b3d6uy05 1    How can I get an ISO 8601 from moment js

User · Answer

var date   moment new Date    moment ISO 8601   console log date

User · Answer

When you use Mongoose to store dates into MongoDB you need to use toISOString   because all dates are stored as ISOdates with miliseconds   moment format     2018-04-17T20 00 00Z  moment toISOString   - gt  USE THIS TO STORE IN MONGOOSE  2018-04-17T20 00 00 000Z

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var x   moment       date format moment ISO 8601      error  moment  2010-01-01T05 06 07     YYYY   moment ISO 8601        error document write x

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Use format with no parameters   var date   moment    date format        2014-09-08T08 02 17-05 00     http   jsfiddle net 8gvhL1dz

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moment   toISOString       or format   - see below   http   momentjs com docs   displaying as-iso-string   Update Based on the answer  by  sennet and the comment by  dvlsg  see Fiddle  it should be noted that there is a difference between format and toISOString  Both are correct but the underlying process differs  toISOString converts to a Date object  sets to UTC then uses the native Date prototype function to output ISO8601 in UTC with milliseconds  YYYY-MM-DD T HH mm ss SSS Z    On the other hand  format uses the default format  YYYY-MM-DDTHH mm ssZ  without milliseconds and maintains the timezone offset   I ve opened an issue as I think it can lead to unexpected results

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Answer in 2020  Includes Timezone Support  The problem we were having is that  by default  ISOStrings aren t localized to your timezone  So  this is kinda hacky  but here s how we ended up solving this issue   x000D   x000D      Imports Moment for time utilities     const moment   require  moment-timezone   moment   tz  America Chicago   format         Returns now in ISO format in Central Time    export function getNowISO       return    moment   toISOString true  substring 0  23  Z    x000D   x000D   x000D   This will leave you with an exact ISO-formatted  localized string  Important note  Moment now suggests using other packages for new projects

User · Answer

Also possible with vanilla JS  new Date   toISOString       2017-08-26T16 31 02 349Z

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If you just want the date portion  e g  2017-06-27   and you want it to work regardless of time zone and also in Arabic  here is code I wrote   function isoDate date        if   date            return null           date   moment date  toDate           don t call toISOString because it takes the time zone into        account which we don t want   Also don t call  format   because it        returns Arabic instead of English      var month   1   date getMonth       if  month  lt  10            month    0    month           var day   date getDate       if  day  lt  10            day    0    day           return date getFullYear      -    month    -    day

[javascript] How do I format a date as ISO 8601 in moment.js?

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