How do you get a timestamp in JavaScript

Question

How can I get a timestamp in JavaScript   Something similar to Unix timestamp  that is  a single number that represents the current time and date  Either as a number or a string

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var d   new Date    console log d valueOf

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Short  amp  Snazzy     new Date     A unary operator like plus triggers the valueOf method in the Date object and it returns the timestamp  without any alteration    Details   On almost all current browsers you can use Date now   to get the UTC timestamp in milliseconds  a notable exception to this is IE8 and earlier  see compatibility table    You can easily make a shim for this  though   if   Date now        Date now   function     return new Date   getTime          To get the timestamp in seconds  you can use   Math floor Date now     1000    Or alternatively you could use   Date now     1000   0   Which should be slightly faster  but also less readable  also see this answer    I would recommend using Date now    with compatibility shim   It s slightly better because it s shorter  amp  doesn t create a new Date object  However  if you don t want a shim  amp  maximum compatibility  you could use the  old  method to get the timestamp in milliseconds   new Date   getTime     Which you can then convert to seconds like this   Math round new Date   getTime   1000    And you can also use the valueOf method which we showed above   new Date   valueOf     Timestamp in Milliseconds   x000D   x000D  var timeStampInMs   window performance  amp  amp  window performance now  amp  amp  window performance timing  amp  amp  window performance timing navigationStart   window performance now     window performance timing navigationStart   Date now    x000D   x000D  console log timeStampInMs  Date now     x000D   x000D   x000D

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x000D   x000D     The Current Unix Timestamp x000D     1443534720 seconds since Jan 01 1970   UTC  x000D   x000D     seconds x000D  console log Math floor new Date   valueOf     1000       1443534720 x000D  console log Math floor Date now     1000       1443534720 x000D  console log Math floor new Date   getTime     1000       1443534720 x000D   x000D     milliseconds x000D  console log Math floor new Date   valueOf         1443534720087 x000D  console log Math floor Date now         1443534720087 x000D  console log Math floor new Date   getTime         1443534720087 x000D   x000D     jQuery x000D     seconds x000D  console log Math floor   now     1000       1443534720 x000D     milliseconds x000D  console log   now        1443534720087 x000D   lt script src  https   ajax googleapis com ajax libs jquery 2 1 1 jquery min js  gt  lt  script gt  x000D   x000D   x000D

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The Date getTime   method can be used with a little tweak      The value returned by the getTime method is the number of milliseconds   since 1 January 1970 00 00 00 UTC    Divide the result by 1000 to get the Unix timestamp  floor if necessary    new Date  getTime     1000     The Date valueOf   method is functionally equivalent to Date getTime    which makes it possible to use arithmetic operators on date object to achieve identical results  In my opinion  this approach affects readability

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Date  a native object in JavaScript is the way we get all data about time   Just be careful in JavaScript the timestamp depends on the client computer set  so it s not 100  accurate timestamp  To get the best result  you need to get the timestamp from the server-side    Anyway  my preferred way is using vanilla  This is a common way of doing it in JavaScript   Date now      return 1495255666921   In MDN it s mentioned as below      The Date now   method returns the number of milliseconds elapsed since   1 January 1970 00 00 00 UTC    Because now   is a static method of Date  you always use it as Date now      If you using a version below ES5  Date now    not works and you need to use   new Date   getTime

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function getTimeStamp         var now   new Date        return   now getMonth     1                       now getDate                         now getFullYear                        now getHours                          now getMinutes    lt  10                       0    now getMinutes                        now getMinutes                            now getSeconds    lt  10                       0    now getSeconds                        now getSeconds

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Just to add up  here s a function to return a timestamp string in Javascript   Example  15 06 38 PM  function displayTime         var str            var currentTime   new Date       var hours   currentTime getHours       var minutes   currentTime getMinutes       var seconds   currentTime getSeconds        if  minutes  lt  10            minutes    0    minutes           if  seconds  lt  10            seconds    0    seconds           str    hours         minutes         seconds            if hours  gt  11           str     PM        else           str     AM            return str

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For a timestamp with microsecond resolution  there s performance now   function time        return performance now     performance timing navigationStart      This could for example yield 1436140826653 139  while Date now only gives 1436140826653

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Performance Today - 2020 04 23 I perform tests for chosen solutions  I tested on MacOs High Sierra 10 13 6 on Chrome 81 0  Safari 13 1  Firefox 75 0 Conclusions  Solution Date now    E  is fastest on Chrome and Safari and second fast on Firefox and this is probably best choice for fast cross-browser solution Solution performance now    G   what is surprising  is more than 100x faster than other solutions on Firefox but slowest on Chrome Solutions C D F are quite slow on all browsers   Details Results for chrome  You can perform test on your machine HERE Code used in tests is presented in below snippet  x000D   x000D  function A       return new Date   getTime       function B       return new Date   valueOf       function C       return  new Date       function D       return new Date   1     function E       return Date now       function F       return Number new Date        function G          this solution returns time counted from loading the page        and on Chrome it gives better precission    return performance now             TEST  log    n f    gt  console log    n      f        log  A  A   log  B  B   log  C  C   log  D  D   log  E  E   log  F  F   log  G  G   x000D  This snippet only presents code used in external benchmark x000D   x000D   x000D

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If it is for logging purposes  you can use ISOString  new Date   toISOString        2019-05-18T20 02 36 694Z

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I learned a really cool way of converting a given Date object to a Unix timestamp from the source code of JQuery Cookie the other day   Here s an example   var date   new Date    var timestamp    date

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For lodash and underscore users  use   now   var timestamp     now       in milliseconds

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Here is a simple function to generate timestamp in the format  mm dd yy hh mi ss   function getTimeStamp         var now   new Date        return   now getMonth     1                       now getDate                         now getFullYear                        now getHours                          now getMinutes    lt  10                       0    now getMinutes                        now getMinutes                            now getSeconds    lt  10                       0    now getSeconds                        now getSeconds

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there are many ways to do it   Date now     new Date   getTime     new Date   valueOf     To get the timestamp in seconds  convert it using   Math floor Date now     1000

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I provide multiple solutions with descriptions in this answer  Feel free to ask questions if anything is unclear PS  sadly someone merged this to the top answer without giving credit     Quick and dirty solution   Date now    1000  0      Warning  it might break in 2038 and return negative numbers if you do the  0 magic  Use Math floor   instead by that time   Math floor   solution   Math floor Date now    1000       Some nerdy alternative by Derek      taken from the comments below this answer   new Date 1e3 0     Polyfill to get Date now   working   To get it working in IE you could do this  Polyfill from MDN    if   Date now        Date now   function now             return new Date   getTime                 If you do not care about the year   day of week   daylight saving time you could strip it away and use this after 2038     var now    function          var year   new Date new Date   getFullYear   toString    getTime        return function              return Date now   - year                  Some output of how it will look   new Date   Thu Oct 29 2015 08 46 30 GMT 0100  Mitteleurop  ische Zeit   new Date now    Thu Oct 29 1970 09 46 30 GMT 0100  Mitteleurop  ische Zeit         Of course it will break daylight saving time but depending on what you   are building this might be useful to you if you need to do binary   operations on timestamps after int32 will break in 2038       This will also return negative values but only if the user of that PC   you are running your code on is changing their PC s clock at least to   31th of december of the previous year      If you just want to know the relative time from the point of when the code was run through first you could use something like this   var relativeTime    function          var start   Date now        return function              return Date now   - start                 In case you are using jQuery you could use   now   as described in jQuery s Docs which makes the polyfill obsolete since   now   internally does the same thing   new Date  getTime    If you are just happy about jQuery s version consider upvoting this answer since I did not find it myself     Now a tiny explaination of what  0 does   By providing    you tell the interpreter to do a binary OR operation  Bit operations require absolute numbers which turns the decimal result from Date now     1000 into an integer     During that conversion  decimals are removed  resulting in the same result as using Math floor   but using less code      Be warned though  it will convert a 64 bit double to a 32 bit integer  This will result in information loss when dealing with huge numbers  Timestamps will break after 2038 due to 32 bit integer overflow      For further information about Date now follow this link  Date now     MDN

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I like this  because it is small    new Date   I also like this  because it is just as short and is compatible with modern browsers  and over 500 people voted that it is better    Date now

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Here is a simple function to generate timestamp in the format  mm dd yy hh mi ss   function getTimeStamp         var now   new Date        return   now getMonth     1                       now getDate                         now getFullYear                        now getHours                          now getMinutes    lt  10                       0    now getMinutes                        now getMinutes                            now getSeconds    lt  10                       0    now getSeconds                        now getSeconds

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One I haven t seen yet   Math floor Date now     1000      current time in seconds   Another one I haven t seen yet is  var     require  lodash       from here https   lodash com docs now   now

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var time   Date now    function       return  new Date      time

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You can only use    x000D   x000D      var timestamp   new Date   getTime    x000D      console log timestamp   x000D   x000D   x000D    to get the current timestamp  No need to do anything extra

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The Date getTime   method can be used with a little tweak      The value returned by the getTime method is the number of milliseconds   since 1 January 1970 00 00 00 UTC    Divide the result by 1000 to get the Unix timestamp  floor if necessary    new Date  getTime     1000     The Date valueOf   method is functionally equivalent to Date getTime    which makes it possible to use arithmetic operators on date object to achieve identical results  In my opinion  this approach affects readability

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I learned a really cool way of converting a given Date object to a Unix timestamp from the source code of JQuery Cookie the other day   Here s an example   var date   new Date    var timestamp    date

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For lodash and underscore users  use   now   var timestamp     now       in milliseconds

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This one has a solution   which converts unixtime stamp to tim in js try this  var a   new Date UNIX timestamp 1000   var hour   a getUTCHours    var min   a getUTCMinutes    var sec   a getUTCSeconds

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You can only use    x000D   x000D      var timestamp   new Date   getTime    x000D      console log timestamp   x000D   x000D   x000D    to get the current timestamp  No need to do anything extra

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var timestamp   Number new Date        current time as number

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var my timestamp      Date now   1000

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If it is for logging purposes  you can use ISOString  new Date   toISOString        2019-05-18T20 02 36 694Z

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In addition to the other options  if you want a dateformat ISO  you get can get it directly   x000D   x000D  console log new Date   toISOString     x000D   x000D   x000D

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var timestamp   Number new Date        current time as number

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To get time  month  day  year separately this will work   var currentTime   new Date    var month   currentTime getMonth     1  var day   currentTime getDate    var year   currentTime getFullYear

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x000D   x000D  console log new Date   valueOf        returns the number of milliseconds since the epoch x000D   x000D   x000D

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jQuery provides its own method to get the timestamp   var timestamp     now       besides it just implements  new Date  getTime   expression   REF  http   api jquery com jQuery now

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Get TimeStamp In JavaScript  In JavaScript  a timestamp is the number of milliseconds that have passed since January 1  1970  If you don t intend to support  lt  IE8  you can use  new Date   getTime      new Date    and Date now     to directly get the timestamp without having to create a new Date object   To return the required timestamp  new Date  quot 11 01 2018 quot   getTime

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I highly recommend using moment js  To get the number of milliseconds since UNIX epoch  do   moment   valueOf     To get the number of seconds since UNIX epoch  do  moment   unix     You can also convert times like so   moment  2015-07-12 14 59 23    YYYY-MM-DD HH mm ss   valueOf     I do that all the time  No pun intended   To use moment js in the browser    lt script src  moment js  gt  lt  script gt   lt script gt      moment   valueOf     lt  script gt    For more details  including other ways of installing and using MomentJS  see their docs

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Moment js can abstract away a lot of the pain in dealing with Javascript Dates    See  http   momentjs com docs   displaying unix-timestamp   moment   unix

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time   Math round   new Date    getTime  -Date UTC 1970 0 1   1000

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One I haven t seen yet   Math floor Date now     1000      current time in seconds   Another one I haven t seen yet is  var     require  lodash       from here https   lodash com docs now   now

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sometime I need it in objects for xmlhttp calls  so I do like this   timestamp   parseInt new Date   getTime   1000  10

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var timestamp   Number new Date        current time as number

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As of writing this  the top answer is 9 years old  and a lot has changed since then - not least  we have near universal support for a non-hacky solution   Date now     If you want to be absolutely certain that this won t break in some ancient  pre ie9  browser  you can put it behind a check  like so   const currentTimestamp     Date now    new Date     Date now       This will return the milliseconds since epoch time  of course  not seconds   MDN Documentation on Date now

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function getTimeStamp         var now   new Date        return   now getMonth     1                       now getDate                         now getFullYear                        now getHours                          now getMinutes    lt  10                       0    now getMinutes                        now getMinutes                            now getSeconds    lt  10                       0    now getSeconds                        now getSeconds

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This seems to work   console log clock now      returns 1444356078076  console log clock format clock now      returns 10 8 2015 21 02 16  console log clock format clock now   clock add 10   minutes         returns 10 8 2015 21 08 18  var clock         now Date now        add function  qty  units                switch units toLowerCase                      case  weeks       val   qty   1000   60   60   24   7   break                  case  days        val   qty   1000   60   60   24   break                  case  hours       val   qty   1000   60   60   break                  case  minutes     val   qty   1000   60   break                  case  seconds     val   qty   1000   break                  default          val   undefined   break                                return val                     format function  timestamp               var date   new Date timestamp               var year   date getFullYear                var month   date getMonth     1              var day   date getDate                var hours   date getHours                var minutes    0    date getMinutes                var seconds    0    date getSeconds                   Will display time in xx xx xxxx 00 00 00 format             return formattedTime   month                                          day                                          year                                          hours                                          minutes substr -2                                           seconds substr -2

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I highly recommend using moment js  To get the number of milliseconds since UNIX epoch  do   moment   valueOf     To get the number of seconds since UNIX epoch  do  moment   unix     You can also convert times like so   moment  2015-07-12 14 59 23    YYYY-MM-DD HH mm ss   valueOf     I do that all the time  No pun intended   To use moment js in the browser    lt script src  moment js  gt  lt  script gt   lt script gt      moment   valueOf     lt  script gt    For more details  including other ways of installing and using MomentJS  see their docs

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var my timestamp      Date now   1000

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Moment js can abstract away a lot of the pain in dealing with Javascript Dates    See  http   momentjs com docs   displaying unix-timestamp   moment   unix

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The advised  proper way is Number new Date      in terms of code- readability   Also  UglifyJS and Google-Closure-Compiler will lower the complexity of the parsed code-logic-tree  relevant if you are using one of them to obscure minify your code     for Unix timestamp  which has a lower time resolution   just divide current number with 1000  keeping the whole

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sometime I need it in objects for xmlhttp calls  so I do like this   timestamp   parseInt new Date   getTime   1000  10

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Short  amp  Snazzy     new Date     A unary operator like plus triggers the valueOf method in the Date object and it returns the timestamp  without any alteration    Details   On almost all current browsers you can use Date now   to get the UTC timestamp in milliseconds  a notable exception to this is IE8 and earlier  see compatibility table    You can easily make a shim for this  though   if   Date now        Date now   function     return new Date   getTime          To get the timestamp in seconds  you can use   Math floor Date now     1000    Or alternatively you could use   Date now     1000   0   Which should be slightly faster  but also less readable  also see this answer    I would recommend using Date now    with compatibility shim   It s slightly better because it s shorter  amp  doesn t create a new Date object  However  if you don t want a shim  amp  maximum compatibility  you could use the  old  method to get the timestamp in milliseconds   new Date   getTime     Which you can then convert to seconds like this   Math round new Date   getTime   1000    And you can also use the valueOf method which we showed above   new Date   valueOf     Timestamp in Milliseconds   x000D   x000D  var timeStampInMs   window performance  amp  amp  window performance now  amp  amp  window performance timing  amp  amp  window performance timing navigationStart   window performance now     window performance timing navigationStart   Date now    x000D   x000D  console log timeStampInMs  Date now     x000D   x000D   x000D

User · Answer

Date  a native object in JavaScript is the way we get all data about time   Just be careful in JavaScript the timestamp depends on the client computer set  so it s not 100  accurate timestamp  To get the best result  you need to get the timestamp from the server-side    Anyway  my preferred way is using vanilla  This is a common way of doing it in JavaScript   Date now      return 1495255666921   In MDN it s mentioned as below      The Date now   method returns the number of milliseconds elapsed since   1 January 1970 00 00 00 UTC    Because now   is a static method of Date  you always use it as Date now      If you using a version below ES5  Date now    not works and you need to use   new Date   getTime

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The code Math floor new Date   getTime     1000  can be shortened to new Date   1E3   0   Consider to skip direct getTime   invocation and use   0 as a replacement for Math floor   function  It s also good to remember 1E3 is a shorter equivalent for 1000  uppercase E is preferred than lowercase to indicate 1E3 as a constant    As a result you get the following    x000D   x000D  var ts   new Date   1E3   0  x000D   x000D  console log ts   x000D   x000D   x000D

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Short  amp  Snazzy     new Date     A unary operator like plus triggers the valueOf method in the Date object and it returns the timestamp  without any alteration    Details   On almost all current browsers you can use Date now   to get the UTC timestamp in milliseconds  a notable exception to this is IE8 and earlier  see compatibility table    You can easily make a shim for this  though   if   Date now        Date now   function     return new Date   getTime          To get the timestamp in seconds  you can use   Math floor Date now     1000    Or alternatively you could use   Date now     1000   0   Which should be slightly faster  but also less readable  also see this answer    I would recommend using Date now    with compatibility shim   It s slightly better because it s shorter  amp  doesn t create a new Date object  However  if you don t want a shim  amp  maximum compatibility  you could use the  old  method to get the timestamp in milliseconds   new Date   getTime     Which you can then convert to seconds like this   Math round new Date   getTime   1000    And you can also use the valueOf method which we showed above   new Date   valueOf     Timestamp in Milliseconds   x000D   x000D  var timeStampInMs   window performance  amp  amp  window performance now  amp  amp  window performance timing  amp  amp  window performance timing navigationStart   window performance now     window performance timing navigationStart   Date now    x000D   x000D  console log timeStampInMs  Date now     x000D   x000D   x000D

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x000D   x000D     The Current Unix Timestamp x000D     1443534720 seconds since Jan 01 1970   UTC  x000D   x000D     seconds x000D  console log Math floor new Date   valueOf     1000       1443534720 x000D  console log Math floor Date now     1000       1443534720 x000D  console log Math floor new Date   getTime     1000       1443534720 x000D   x000D     milliseconds x000D  console log Math floor new Date   valueOf         1443534720087 x000D  console log Math floor Date now         1443534720087 x000D  console log Math floor new Date   getTime         1443534720087 x000D   x000D     jQuery x000D     seconds x000D  console log Math floor   now     1000       1443534720 x000D     milliseconds x000D  console log   now        1443534720087 x000D   lt script src  https   ajax googleapis com ajax libs jquery 2 1 1 jquery min js  gt  lt  script gt  x000D   x000D   x000D

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var timestamp   Number new Date        current time as number

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var time   Date now    function       return  new Date      time

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I provide multiple solutions with descriptions in this answer  Feel free to ask questions if anything is unclear PS  sadly someone merged this to the top answer without giving credit     Quick and dirty solution   Date now    1000  0      Warning  it might break in 2038 and return negative numbers if you do the  0 magic  Use Math floor   instead by that time   Math floor   solution   Math floor Date now    1000       Some nerdy alternative by Derek      taken from the comments below this answer   new Date 1e3 0     Polyfill to get Date now   working   To get it working in IE you could do this  Polyfill from MDN    if   Date now        Date now   function now             return new Date   getTime                 If you do not care about the year   day of week   daylight saving time you could strip it away and use this after 2038     var now    function          var year   new Date new Date   getFullYear   toString    getTime        return function              return Date now   - year                  Some output of how it will look   new Date   Thu Oct 29 2015 08 46 30 GMT 0100  Mitteleurop  ische Zeit   new Date now    Thu Oct 29 1970 09 46 30 GMT 0100  Mitteleurop  ische Zeit         Of course it will break daylight saving time but depending on what you   are building this might be useful to you if you need to do binary   operations on timestamps after int32 will break in 2038       This will also return negative values but only if the user of that PC   you are running your code on is changing their PC s clock at least to   31th of december of the previous year      If you just want to know the relative time from the point of when the code was run through first you could use something like this   var relativeTime    function          var start   Date now        return function              return Date now   - start                 In case you are using jQuery you could use   now   as described in jQuery s Docs which makes the polyfill obsolete since   now   internally does the same thing   new Date  getTime    If you are just happy about jQuery s version consider upvoting this answer since I did not find it myself     Now a tiny explaination of what  0 does   By providing    you tell the interpreter to do a binary OR operation  Bit operations require absolute numbers which turns the decimal result from Date now     1000 into an integer     During that conversion  decimals are removed  resulting in the same result as using Math floor   but using less code      Be warned though  it will convert a 64 bit double to a 32 bit integer  This will result in information loss when dealing with huge numbers  Timestamps will break after 2038 due to 32 bit integer overflow      For further information about Date now follow this link  Date now     MDN

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This one has a solution   which converts unixtime stamp to tim in js try this  var a   new Date UNIX timestamp 1000   var hour   a getUTCHours    var min   a getUTCMinutes    var sec   a getUTCSeconds

User · Answer

var time   Date now    function       return  new Date      time

User · Answer

Short  amp  Snazzy     new Date     A unary operator like plus triggers the valueOf method in the Date object and it returns the timestamp  without any alteration    Details   On almost all current browsers you can use Date now   to get the UTC timestamp in milliseconds  a notable exception to this is IE8 and earlier  see compatibility table    You can easily make a shim for this  though   if   Date now        Date now   function     return new Date   getTime          To get the timestamp in seconds  you can use   Math floor Date now     1000    Or alternatively you could use   Date now     1000   0   Which should be slightly faster  but also less readable  also see this answer    I would recommend using Date now    with compatibility shim   It s slightly better because it s shorter  amp  doesn t create a new Date object  However  if you don t want a shim  amp  maximum compatibility  you could use the  old  method to get the timestamp in milliseconds   new Date   getTime     Which you can then convert to seconds like this   Math round new Date   getTime   1000    And you can also use the valueOf method which we showed above   new Date   valueOf     Timestamp in Milliseconds   x000D   x000D  var timeStampInMs   window performance  amp  amp  window performance now  amp  amp  window performance timing  amp  amp  window performance timing navigationStart   window performance now     window performance timing navigationStart   Date now    x000D   x000D  console log timeStampInMs  Date now     x000D   x000D   x000D

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JavaScript works with the number of milliseconds since the epoch whereas most other languages work with the seconds  You could work with milliseconds but as soon as you pass a value to say PHP  the PHP native functions will probably fail  So to be sure I always use the seconds  not milliseconds   This will give you a Unix timestamp  in seconds    var unix   Math round  new Date   1000     This will give you the milliseconds since the epoch  not Unix timestamp    var milliseconds   new Date   getTime

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As of writing this  the top answer is 9 years old  and a lot has changed since then - not least  we have near universal support for a non-hacky solution   Date now     If you want to be absolutely certain that this won t break in some ancient  pre ie9  browser  you can put it behind a check  like so   const currentTimestamp     Date now    new Date     Date now       This will return the milliseconds since epoch time  of course  not seconds   MDN Documentation on Date now

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jQuery provides its own method to get the timestamp   var timestamp     now       besides it just implements  new Date  getTime   expression   REF  http   api jquery com jQuery now

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Here is another solution to generate a timestamp in JavaScript - including a padding method for single numbers - using day  month  year  hour  minute and seconds in its result  working example at jsfiddle    var pad   function int    return int  lt  10   0   int   int     var timestamp   new Date         timestamp day             pad timestamp getDate             pad timestamp getMonth     1      getMonth   returns 0 to 11          timestamp getFullYear               timestamp time             pad timestamp getHours             pad timestamp getMinutes             pad timestamp getSeconds            timestamp now   parseInt timestamp day join       timestamp time join       alert timestamp now

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Just to add up  here s a function to return a timestamp string in Javascript   Example  15 06 38 PM  function displayTime         var str            var currentTime   new Date       var hours   currentTime getHours       var minutes   currentTime getMinutes       var seconds   currentTime getSeconds        if  minutes  lt  10            minutes    0    minutes           if  seconds  lt  10            seconds    0    seconds           str    hours         minutes         seconds            if hours  gt  11           str     PM        else           str     AM            return str

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x000D   x000D  console log new Date   valueOf        returns the number of milliseconds since the epoch x000D   x000D   x000D

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The code Math floor new Date   getTime     1000  can be shortened to new Date   1E3   0   Consider to skip direct getTime   invocation and use   0 as a replacement for Math floor   function  It s also good to remember 1E3 is a shorter equivalent for 1000  uppercase E is preferred than lowercase to indicate 1E3 as a constant    As a result you get the following    x000D   x000D  var ts   new Date   1E3   0  x000D   x000D  console log ts   x000D   x000D   x000D

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there are many ways to do it   Date now     new Date   getTime     new Date   valueOf     To get the timestamp in seconds  convert it using   Math floor Date now     1000

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time   Math round   new Date    getTime  -Date UTC 1970 0 1   1000

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The advised  proper way is Number new Date      in terms of code- readability   Also  UglifyJS and Google-Closure-Compiler will lower the complexity of the parsed code-logic-tree  relevant if you are using one of them to obscure minify your code     for Unix timestamp  which has a lower time resolution   just divide current number with 1000  keeping the whole

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This seems to work   console log clock now      returns 1444356078076  console log clock format clock now      returns 10 8 2015 21 02 16  console log clock format clock now   clock add 10   minutes         returns 10 8 2015 21 08 18  var clock         now Date now        add function  qty  units                switch units toLowerCase                      case  weeks       val   qty   1000   60   60   24   7   break                  case  days        val   qty   1000   60   60   24   break                  case  hours       val   qty   1000   60   60   break                  case  minutes     val   qty   1000   60   break                  case  seconds     val   qty   1000   break                  default          val   undefined   break                                return val                     format function  timestamp               var date   new Date timestamp               var year   date getFullYear                var month   date getMonth     1              var day   date getDate                var hours   date getHours                var minutes    0    date getMinutes                var seconds    0    date getSeconds                   Will display time in xx xx xxxx 00 00 00 format             return formattedTime   month                                          day                                          year                                          hours                                          minutes substr -2                                           seconds substr -2

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var d   new Date    console log d valueOf

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JavaScript works with the number of milliseconds since the epoch whereas most other languages work with the seconds  You could work with milliseconds but as soon as you pass a value to say PHP  the PHP native functions will probably fail  So to be sure I always use the seconds  not milliseconds   This will give you a Unix timestamp  in seconds    var unix   Math round  new Date   1000     This will give you the milliseconds since the epoch  not Unix timestamp    var milliseconds   new Date   getTime

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Any browsers not supported Date now  you can use this for get current date time   currentTime   Date now       new Date

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In addition to the other options  if you want a dateformat ISO  you get can get it directly   x000D   x000D  console log new Date   toISOString     x000D   x000D   x000D

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Here is another solution to generate a timestamp in JavaScript - including a padding method for single numbers - using day  month  year  hour  minute and seconds in its result  working example at jsfiddle    var pad   function int    return int  lt  10   0   int   int     var timestamp   new Date         timestamp day             pad timestamp getDate             pad timestamp getMonth     1      getMonth   returns 0 to 11          timestamp getFullYear               timestamp time             pad timestamp getHours             pad timestamp getMinutes             pad timestamp getSeconds            timestamp now   parseInt timestamp day join       timestamp time join       alert timestamp now

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more simpler way   var timeStamp event timestamp    new Date   getTime

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To get time  month  day  year separately this will work   var currentTime   new Date    var month   currentTime getMonth     1  var day   currentTime getDate    var year   currentTime getFullYear

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Get TimeStamp In JavaScript  In JavaScript  a timestamp is the number of milliseconds that have passed since January 1  1970  If you don t intend to support  lt  IE8  you can use  new Date   getTime      new Date    and Date now     to directly get the timestamp without having to create a new Date object   To return the required timestamp  new Date  quot 11 01 2018 quot   getTime

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Any browsers not supported Date now  you can use this for get current date time   currentTime   Date now       new Date

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If want a basic way to generate a timestamp in Node js this works well   var time   process hrtime    var timestamp   Math round  time  0     1e3   time  1     1e6      Our team is using this to bust cache in a localhost environment  The output is  dist css global css v 245521377 where 245521377 is the timestamp generated by hrtime      Hopefully this helps  the methods above can work as well but I found this to be the simplest approach for our needs in Node js

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If want a basic way to generate a timestamp in Node js this works well   var time   process hrtime    var timestamp   Math round  time  0     1e3   time  1     1e6      Our team is using this to bust cache in a localhost environment  The output is  dist css global css v 245521377 where 245521377 is the timestamp generated by hrtime      Hopefully this helps  the methods above can work as well but I found this to be the simplest approach for our needs in Node js

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I like this  because it is small    new Date   I also like this  because it is just as short and is compatible with modern browsers  and over 500 people voted that it is better    Date now

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For a timestamp with microsecond resolution  there s performance now   function time        return performance now     performance timing navigationStart      This could for example yield 1436140826653 139  while Date now only gives 1436140826653

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var time   Date now    function       return  new Date      time

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Performance Today - 2020 04 23 I perform tests for chosen solutions  I tested on MacOs High Sierra 10 13 6 on Chrome 81 0  Safari 13 1  Firefox 75 0 Conclusions  Solution Date now    E  is fastest on Chrome and Safari and second fast on Firefox and this is probably best choice for fast cross-browser solution Solution performance now    G   what is surprising  is more than 100x faster than other solutions on Firefox but slowest on Chrome Solutions C D F are quite slow on all browsers   Details Results for chrome  You can perform test on your machine HERE Code used in tests is presented in below snippet  x000D   x000D  function A       return new Date   getTime       function B       return new Date   valueOf       function C       return  new Date       function D       return new Date   1     function E       return Date now       function F       return Number new Date        function G          this solution returns time counted from loading the page        and on Chrome it gives better precission    return performance now             TEST  log    n f    gt  console log    n      f        log  A  A   log  B  B   log  C  C   log  D  D   log  E  E   log  F  F   log  G  G   x000D  This snippet only presents code used in external benchmark x000D   x000D   x000D

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more simpler way   var timeStamp event timestamp    new Date   getTime

[javascript] How do you get a timestamp in JavaScript?

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