convert iso date to milliseconds in javascript

Question

Can I convert iso date to milliseconds  for example I want to convert this iso   2012-02-10T13 19 11 0000   to milliseconds   Because I want to compare current date from the created date  And created date is an iso date

User · Answer

Yes  you can do this in a single line   let ms   Date parse  2019-05-15 07 11 10 673Z    console log ms    1557904270673

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In case if anyone wants to grab only the Time from a ISO Date  following will be helpful  I was searching for that and I couldn t find a question for it  So in case some one sees will be helpful  let isoDate    2020-09-28T15 27 15 05 30   let result   isoDate match   d d  d d    console log result 0     The output will be the only the time from isoDate which is  15 27

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Another option as of 2017 is to use Date parse    MDN s documentation points out  however  that it is unreliable prior to ES5   var date   new Date       today s date and time in ISO format var myDate   Date parse date     See the fiddle for more details

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var date   new Date date string   var milliseconds   date getTime      This worked for me

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var date   new Date   console log   Date in MS last three digit       date getMilliseconds    console log   MS      Date now      Using this we can get date in milliseconds

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Another possible solution is to compare current date with January 1  1970  you can get January 1  1970 by new Date 0    var date   new Date     var myDate  date - new Date 0

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A shorthand of the previous solutions is   var myDate    new Date  2012-02-10T13 19 11 0000      It does an on the fly type conversion and directly outputs date in millisecond format    Another way is also using parse method of Date util which only outputs EPOCH time in milliseconds   var myDate   Date parse  2012-02-10T13 19 11 0000

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if wants to convert UTC date to milliseconds syntax   Date UTC year  month   day   hours   min   sec   milisec   e g    date in mili   Date UTC 2020  07  03  03  40  40  40   console log  miliseconds   date in mili

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Try this   x000D   x000D  var date   new Date  11 21 1987 16 00 00       some mock date x000D  var milliseconds   date getTime     x000D     This will return you the number of milliseconds x000D     elapsed from January 1  1970  x000D     if your date is less than that date  the value will be negative x000D   x000D  console log milliseconds   x000D   x000D   x000D    EDIT  You ve provided an ISO date  It is also accepted by the constructor of the Date object   x000D   x000D  var myDate   new Date  2012-02-10T13 19 11 0000    x000D  var result   myDate getTime    x000D  console log result   x000D   x000D   x000D    Edit  The best I ve found is to get rid of the offset manually    x000D   x000D  var myDate   new Date  2012-02-10T13 19 11 0000    x000D  var offset   myDate getTimezoneOffset     60   1000  x000D   x000D  var withOffset   myDate getTime    x000D  var withoutOffset   withOffset - offset  x000D  console log withOffset   x000D  console log withoutOffset   x000D   x000D   x000D    Seems working  As far as problems with converting ISO string into the Date object you may refer to the links provided   EDIT  Fixed the bug with incorrect conversion to milliseconds according to Prasad19sara s comment

User · Answer

Another solution could be to use Number object parser like this    x000D   x000D  let result   Number new Date  2012-02-10T13 19 11 0000     x000D  let resultWithGetTime    new Date  2012-02-10T13 19 11 0000    getTime    x000D  console log result   x000D  console log resultWithGetTime   x000D   x000D   x000D    This converts to milliseconds just like getTime   on Date object

[javascript] convert iso date to milliseconds in javascript

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