Date constructor returns NaN in IE but works in Firefox and Chrome

Question

I m trying to build a little calendar in JavaScript  I have my dates working great in Firefox and Chrome  but in IE the date functions are returning NaN    Here is the function    function buildWeek dateText       var headerDates         var newDate   new Date dateText        for var d 0 d lt 7 d             headerDates      lt th gt     newDate     lt  th gt            newDate setDate newDate getDate   1                                     jQuery  div headerDates   html   lt table gt  lt tr gt   headerDates   lt  tr gt  lt  table gt         dateText is the Monday of the current week which is actually set in php in the format of  m  d  Y   e g   02  01  2010

User · Answer

The Date constructor in JavaScript needs a string in one of the date formats supported by the parse() method.

Apparently, the format you are specifying isn't supported in IE, so you'll need to either change the PHP code, or parse the string manually in JavaScript.

User · Answer

The Date constructor accepts any value  If the primitive   value   of the argument is number  then the Date that is created has that value  If primitive   value   is String  then the specification only guarantees that the Date constructor and the parse method are capable of parsing the result of Date prototype toString and Date prototype toUTCString    A reliable way to set a Date is to construct one and use the setFullYear and setTime methods   An example of that appears here  http   jibbering com faq  parseDate  ECMA-262 r3 does not define any date formats  Passing string values to the Date constructor or Date parse has implementation-dependent outcome  It is best avoided   Edit  The entry from comp lang javascript FAQ is  An Extended ISO 8601 local date format YYYY-MM-DD can be parsed to a Date with the following -     Parses string formatted as YYYY-MM-DD to a Date object     If the supplied string does not match the format  an     invalid Date  value NaN  is returned      param  string  dateStringInRange format YYYY-MM-DD  with year in    range of 0000-9999  inclusive      return  Date  Date object representing the string         function parseISO8601 dateStringInRange        var isoExp      s   d 4  -  d d -  d d  s             date   new Date NaN   month          parts   isoExp exec dateStringInRange        if parts          month    parts 2         date setFullYear parts 1   month - 1  parts 3          if month    date getMonth     1            date setTime NaN                     return date

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I always store my date in UTC time   This is my own function made from the different functions I found in this page   It takes a STRING as a mysql DATETIME format  example   2013-06-15 15 21 41   The checking with the regex is optional  You can delete this part to improve performance   This function return a timestamp   The DATETIME is considered as a UTC date  Be carefull   If you expect a local datetime  this function is not for you       function datetimeToTimestamp datetime                var regDatetime      0-9  4 -    0   0-9  1  10 11 12 -    012   0-9  1  30 31         01   0-9  1  20 21 22 23      0-5   0-9  1        0-5   0-9  1                 if regDatetime test datetime      false              throw  Wrong format for the param   Y-m-d H i s  expected              var a datetime split               var d a 0  split  -            var t a 1  split                var date   new Date            date setUTCFullYear d 0   d 1 -1  d 2            date setUTCHours t 0  t 1  t 2   0            return date getTime

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Don t use  new Date     because it takes the input date string as local time   new Date  11 08 2010   getTime  -new Date  11 07 2010   getTime       90000000 new Date  11 07 2010   getTime  -new Date  11 06 2010   getTime       86400000   we should use  NewDate     it takes the input as GMT time   function NewDate str            str str split  -              var date new Date              date setUTCFullYear str 0   str 1 -1  str 2              date setUTCHours 0  0  0  0             return date             NewDate  2010-11-07   toGMTString    NewDate  2010-11-08   toGMTString

User · Answer

You can use the following code to parse ISO8601 date string   function parseISO8601 d        var timestamp   d      if  typeof  d       number             timestamp   Date parse d             return new Date timestamp

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Send the date text and format in which you are sending the datetext in the below method  It will parse and return as date and this is independent of browser   function cal parse internal val  format    val   val       format   format       var i val   0  var i format   0  var x  y  var now   new Date dbSysCurrentDate   var year   now getYear    var month   now getMonth     1  var date   now getDate     while  i format  lt  format length           Get next token from format string     var c   format charAt i format       var token           while   format charAt i format     c   amp  amp   i format  lt  format length             token    format charAt i format                  Extract contents of value based on format token     if  token     yyyy     token     yy     token     y             if  token     yyyy     x   4  y   4            if  token     yy       x   2  y   2            if  token     y        x   2  y   4            year    getInt val  i val  x  y           if  year    null    return 0            i val    year length          if  year length    2                if  year  gt  70                    year   1900    year - 0                 else                   year   2000    year - 0                                 else if  token     MMMM             month   0          for  var i   0  i  lt  MONTHS LONG length  i                  var month name   MONTHS LONG i               if  val substring i val  i val   month name length     month name                    month   i   1                  i val    month name length                  break                                  if  month  lt  1    month  gt  12    return 0          else if  token     MMM             month   0          for  var i   0  i  lt  MONTHS SHORT length  i                  var month name   MONTHS SHORT i               if  val substring i val  i val   month name length     month name                    month   i   1                  i val    month name length                  break                                  if  month  lt  1    month  gt  12    return 0          else if  token     MM     token     M                  month    getInt val  i val  token length  2           if  month    null    month  lt  1    month  gt  12    return 0            i val    month length        else if  token     dd     token     d             date    getInt val  i val  token length  2           if  date    null    date  lt  1    date  gt  31    return 0            i val    date length        else           if  val substring i val  i val token length     token   return 0           else  i val    token length               If there are any trailing characters left in the value  it doesn t match if  i val    val length    return 0        Is date valid for month  if  month    2           Check for leap year     if   year 4    0  amp  amp  year 100    0      year 400    0        leap year         if  date  gt  29    return false          else           if  date  gt  28    return false            if  month    4    month    6    month    9    month    11        if  date  gt  30    return false      return new Date year  month - 1  date

User · Answer

Here s a code snippet that fixes that behavior of IE  v  date   is a comma separated date-string  e g   2010 4 1     if   browser msie         lst   v  date   split             tmp   new Date parseInt   lst 0   parseInt   lst 1  -1 parseInt   lst 2       else         tmp   new Date v  date         The previous approach didn t consider that JS Date month is ZERO based     Sorry for not explaining too much  I m at work and just thought this might help

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From a mysql datetime timestamp format   var dateStr  2011-08-03 09 15 11     returned from mysql timestamp datetime field var a dateStr split       var d a 0  split  -    var t a 1  split       var date   new Date d 0   d 1 -1  d 2  t 0  t 1  t 2      I hope is useful for someone  Works in IE FF Chrome

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I tried all the above solution but nothing worked for me  I did some brainstorming and found this and worked fine in IE11 as well   x000D   x000D  value  2020-08-10 05 22 44 0   var date new Date value replace      T     format  d m yy h i s    console log date   x000D   x000D   x000D   if  format is not working for you use format only

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Here s another approach that adds a method to the Date object  usage  var d    new Date    parseISO8601  1971-12-15                     Parses the ISO 8601 formated date into a date object  ISO 8601 is YYYY-MM-DD                 param  String  date the date as a string eg 1971-12-15         returns  Date  Date object representing the date of the supplied string             Date prototype parseISO8601   function date           var matches   date match    s   d 4  -  d 2  -  d 2   s               if matches               this setFullYear parseInt matches 1                     this setMonth parseInt matches 2   - 1                   this setDate parseInt matches 3                            return this

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Here s my approach   var parseDate   function dateArg        var dateValues   dateArg split  -        var date   new Date dateValues 0  dateValues 1  dateValues 2        return date format  m d Y        replace   -   with the delimeter you re using

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Try out using getDate feature of datepicker     datepicker formatDate  yy-mm-dd  new Date pField datepicker  getDate

[javascript] Date constructor returns NaN in IE, but works in Firefox and Chrome

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