new Date() works in chrome but not in Firefox

According to ECMA Script, when you create a new instance of Datepassing it a value:

new Date (value)

The following happens:

The [[PrimitiveValue]] internal property of the newly constructed object is set as follows:

1. Let v be ToPrimitive(value).

2. If Type(v) is String, then

   a. Parse v as a date, in exactly the same manner as for the parse method (15.9.4.2); let V be the time value for this date.

3. Else, let V be ToNumber(v).

4. Set the [[PrimitiveValue]] internal property of the newly constructed object to TimeClip(V) and return.

_{ECMAScript 15.9.3.2}

In your case (2) , since the parameter is a string, we proceed to convert said string into a valid date, using the method Date.parse (string).

This method says that it applies very precise rules to do the conversion, and that if there are unrecognizable dates it will return NaN(Not a Number). It means that if your date is not in a valid format, it will be a null value:

The function first attempts to parse the format of the String according to the rules called out in Date Time String Format (15.9.1.15). If the String does not conform to that format the function may fall back to any implementation-specific heuristics or implementation-specific date formats. Unrecognizable Strings or dates containing illegal element values ​​in the format String shall cause Date.parse to return NaN.

_{ECMAScript 15.9.4.2}

The rules that apply to convert your String into a date are specified in section 15.9.1.15 of ECMA Script:

ECMAScript defines a string interchange format for date-times based upon a simplification of the ISO 8601 Extended Format. The format is as follows:YYYY-MM-DDTHH:mm:ss.sssZ

Where the fields are as follows:

YYYY: is the decimal digits of the year 0000 to 9999 in the Gregorian calendar.

- “-” (hyphen) appears literally twice in the string.

MM is the month of the year from 01 (January) to 12 (December).

DD is the day of the month from 01 to 31.

T “T” appears literally in the string, to indicate the beginning of the time element.

HH is the number of complete hours that have passed since midnight as two decimal digits from 00 to 24.

: “:” (colon) appears literally twice in the string.

mm is the number of complete minutes since the start of the hour as two decimal digits from 00 to 59.

ss is the number of complete seconds since the start of the minute as two decimal digits from 00 to 59.

. “.” (dot) appears literally in the string.

sssis the number of complete milliseconds since the start of the second as three decimal digits.

Z is the time zone offset specified as “Z” (for UTC) or either “+” or “-” followed by a time expression HH:mm

This format includes date-only forms:

YYYY

YYYY-MM

YYYY-MM-DD

It also includes “date-time” forms that consist of one of the above date-only forms immediately followed by one of the following time forms with an optional time zone offset appended:

THH:mm

THH:mm:ss

THH:mm:ss.sss

All numbers must be base 10. If the MM or DD fields are absent “01” is used as the value. If the HH, mm, or ss fields are absent “00” is used as the value and the value of an absent sss field is “000”. The value of an absent time zone offset is “Z”.

Illegal values ​​(out-of-bounds as well as syntax errors) in a format string means that the format string is not a valid instance of this format.

NOTE 1 As every day both starts and ends with midnight, the two notations 00:00 and 24:00 are available to distinguish the two midnights that can be associated with one date. This means that the following two notations refer to exactly the same point in time: 1995-02-04T24:00 and 1995-02-05T00:00

NOTE 2 There exists no international standard that specifies abbreviations for civil time zones like CET, EST, etc. and sometimes the same abbreviation is even used for two very different time zones. For this reason, ISO 8601 and this format specify numeric representations of date and time.

_{ECMA Script 15.9.1.15}

conclusion

If you are going to construct dates by passing strings to the constructor, they must comply with what is specified in the 15.9.1.15ECMA Script section above.

If you change your date to the format YYYY-MM-DDor any other of those indicated, a valid object will be created.

For example:

var fechaStr = "2017-11-28";
var fechaDt = new Date(fechaStr);
console.log(fechaDt);

var fechaDt = new Date(2017,11,28,24,00);
console.log(fechaDt);

You can't instantiate dates however you want. For example:

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)

either

d1 = new Date("October 13, 1975 11:13:00")
d2 = new Date(79,5,24)
d3 = new Date(79,5,24,11,33,0)

This format should work in all browsers:

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