new Date is working in Chrome but not Firefox

Question

I am creating a datetime string that looks like this   2010-07-15 11 54 21  And with the following code I get invalid date in Firefox but works just fine in Chrome  var todayDateTime   year    -    month    -    day         hour         minute         seconds  var date1   new Date todayDateTime     In firefox date1 is giving me an invalid date  but in chrome its working just fine what would the main cause be

User · Answer

Simple Solution  This works with All Browsers   var StringDate    24-11-2017     var DateVar   StringDate split  -    var DateVal   new Date DateVar 1          DateVar 0          DateVar 2    alert DateVal

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If you still want to create date using dashes  you can use this format   var date   new Date  2013-08-31T17 00 00Z     But bear in mind  that it creates time according to UTC  Meaning  if you live in GMT 3  3 hours ahead of GMT  timezone  it will add this timezone offset to the time  So the above example will have this value  if GMT 3  note that it is hour 20 00 and not 17 00    Sat Aug 31 2013 20 00 00 GMT 0300  FLE Standard Time    Be sure to add  Z  letter at the end  because otherwise Chrome and Firefox will parse the string differently  one will add time offset and the other won t

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One situation I ve run into was when dealing with milliseconds  FF and IE will not parse this date string correctly when trying to create a new date    2014 11 24 17 38 20 177Z  They do not know how to handle  177Z  Chrome will work though

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You can t instantiate a date object any way you want  It has to be in a specific way  Here are some valid examples   new Date      current date and time new Date milliseconds    milliseconds since 1970 01 01 new Date dateString  new Date year  month  day  hours  minutes  seconds  milliseconds    or  d1   new Date  October 13  1975 11 13 00   d2   new Date 79 5 24  d3   new Date 79 5 24 11 33 0    Chrome must just be more flexible   Source  https   developer mozilla org en-US docs Web JavaScript Reference Global Objects Date  From apsillers comment   the EMCAScript specification requires exactly one date format  i e   YYYY-MM-DDTHH mm ss sssZ  but custom date formats may be freely supported by an implementation   If the String does not conform to that  ECMAScript-defined  format the function may fall back to any implementation-specific heuristics or implementation-specific date formats   Chrome and FF simply have different  implementation-specific date formats

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There is a W3C specification defining possible date strings that should be parseable by any browser  including Firefox and Safari   Year     YYYY  e g   1997  Year and month     YYYY-MM  e g   1997-07  Complete date     YYYY-MM-DD  e g   1997-07-16  Complete date plus hours and minutes     YYYY-MM-DDThh mmTZD  e g   1997-07-16T19 20 01 00  Complete date plus hours  minutes and seconds     YYYY-MM-DDThh mm ssTZD  e g   1997-07-16T19 20 30 01 00  Complete date plus hours  minutes  seconds and a decimal fraction of a second    YYYY-MM-DDThh mm ss sTZD  e g   1997-07-16T19 20 30 45 01 00   where YYYY   four-digit year MM     two-digit month  01 January  etc   DD     two-digit day of month  01 through 31  hh     two digits of hour  00 through 23   am pm NOT allowed  mm     two digits of minute  00 through 59  ss     two digits of second  00 through 59  s      one or more digits representing a decimal fraction of a second TZD    time zone designator  Z or  hh mm or -hh mm   According to YYYY-MM-DDThh mmTZD  the example 2010-07-15 11 54 21 has to be converted to either 2010-07-15T11 54 21Z or 2010-07-15T11 54 21 02 00  or with any other timezone   Here is a short example showing the results of each variant   x000D   x000D  const oldDateString    2010-07-15 11 54 21  const newDateStringWithoutTZD    2010-07-15T11 54 21Z  const newDateStringWithTZD    2010-07-15T11 54 21 02 00  document getElementById  oldDateString   innerHTML    new Date oldDateString   toString   document getElementById  newDateStringWithoutTZD   innerHTML    new Date newDateStringWithoutTZD   toString   document getElementById  newDateStringWithTZD   innerHTML    new Date newDateStringWithTZD   toString   x000D  div     padding  10px    x000D   lt div gt     lt strong gt Old Date String lt  strong gt     lt br gt     lt span id  oldDateString  gt  lt  span gt   lt  div gt   lt div gt     lt strong gt New Date String  without Timezone  lt  strong gt     lt br gt     lt span id  newDateStringWithoutTZD  gt  lt  span gt   lt  div gt   lt div gt     lt strong gt New Date String  with Timezone  lt  strong gt     lt br gt     lt span id  newDateStringWithTZD  gt  lt  span gt   lt  div gt  x000D   x000D   x000D

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This works in all browsers -     new Date  2001 01 31 12 00 00 AM     new Date  2001-01-31 12 00 00     Format  YYYY-MM-DDTHH mm ss sss  Details  http   www ecma-international org ecma-262 5 1  sec-15 9 1 15

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Option 1    Suppose your timestring has a format that looks like this     2016-03-10 16 00 00 0    In that case  you could do a simple regex to convert it to ISO 8601     2016-03-10 16 00 00 0  replace    g  T     This would procude the following output     2016-03-10T16 00 00 0    This is the standard datetime format  and thus supported by all browsers     x000D   x000D  document body innerHTML   new Date  2016-03-10T16 00 00 0      THIS IS SAFE TO USE x000D   x000D   x000D    Option 2    Suppose your timestring has a format that looks like this     02-24-2015 09 22 21 PM    Here  you can do the following regex     02-24-2015 09 22 21 PM  replace  - g         This  too  produces a format supported by all browsers     x000D   x000D  document body innerHTML   new Date  02 24 2015 09 22 21 PM      THIS IS SAFE TO USE x000D   x000D   x000D    Option 3    Suppose you have a time string that isn t easy to adjust to one of the well-supported standards   In that case  it s best to just split your time string into different pieces and use them as individual parameters for Date     x000D   x000D  document body innerHTML   new Date 2016  2  26  3  24  0      THIS IS SAFE TO USE x000D   x000D   x000D

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I have used following date format and it s working in all browser   var target date   new Date  Jul 17  2015 16 55 22   getTime     var days  hours  minutes  seconds   var countdown   document getElementById  countdown     remaining   setInterval function           var current date   new Date   getTime        var seconds left    target date - current date    1000      days   parseInt seconds left   86400       seconds left   seconds left   86400      hours   parseInt seconds left   3600       seconds left   seconds left   3600      minutes   parseInt seconds left   60       seconds   parseInt seconds left   60       countdown innerHTML     lt b gt   days     day      hours     hour              minutes     minute      seconds     second  lt  b gt         1000

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I was having a similar issue in both Firefox and Safari when working with AngularJS   For example  if a date returned from Angular looked like this   2014-06-02 10 28 00   using this code   new Date  2014-06-02 10 28 00   toISOString      returns an invalid date error in Firefox and Safari  However in Chrome it works fine   As another answer stated  Chrome is most likely just more flexible with parsing date strings   My eventual goal was to format the date a certain way   I found an excellent library that handled both the cross browser compatibility issue and the date formatting issue   The library is called moment js   Using this library the following code works correctly across all browsers I tested   moment  2014-06-02 10 28 00   format  MMM d YY     If you are willing to include this extra library into your app you can more easily build your date string while avoiding possible browser compatibility issues   As a bonus you will have a good way to easily format  add  subtract  etc dates if needed

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This is what worked for me on Firefox and Chrome      The format is  year-month-date hr mins seconds milliseconds  const d   new Date  2020-1-4 12 00 00 999       we use the     separator between seconds and milliseconds    Good Luck

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This works in most browsers as well  new Date  2001 01 31 12 00 00     That is the format of   yyyy MM dd HH mm ss

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In Firefox  any invalid Date is returned as a Date object as Date 1899-11-29T19 00 00 000Z  therefore check if browser is Firefox then get Date object of string  1899-11-29T19 00 00 000Z  getDate    Finally compare it with the date

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In fact  Chrome is more flexible to deal with different string format  Even if you don t figure out its String format  Chrome still can successfully convert String to Date without error  Like this     var outputDate   new Date Date parse inputString      But for Firefox and Safari  things become more complex  In fact  in Firefox s document  it already says   https   developer mozilla org en-US docs Web JavaScript Reference Global Objects Date parse      A string representing an RFC2822 or ISO 8601 date  other formats may be used  but results may be unexpected     So  when you want to use Date parse in Firefox and Safari  you should be careful  For me  I use a trick method to deal with it   Note  it might be not always correct for all cases   if  input indexOf  UTC      -1      var tempInput   inputString substr 0  10     T    inputString substr 11  8     Z     date   new Date Date parse tempInput        Here it converts 2013-08-08 11 52 18 UTC to 2013-08-08T11 52 18Z first  and then its format is fit words in Firefox s document  At this time  Date parse will be always right in any browser

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This should work for you   var date1   new Date year  month  day  hour  minute  seconds     I had to create date form a string so I have done it like this   var d    2013-07-20 16 57 27   var date1   new Date d substr 0  4   d substr 5  2   d substr 8  2   d substr 11  2   d substr 14  2   d substr 17  2      Remember that the months in javascript are from 0 to 11  so you should reduce the month value by 1  like this   var d    2013-07-20 16 57 27   var date1   new Date d substr 0  4   d substr 5  2  - 1  d substr 8  2   d substr 11  2   d substr 14  2   d substr 17  2

[javascript] new Date() is working in Chrome but not Firefox

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