new Operatorsuper Keyword? : ), )if Statementdo-while Statementwhile Statementfor Statementfor-in,for-of, andfor-await-of Statementscontinue Statementbreak Statementreturn Statementwith Statementswitch Statementthrow Statementtry Statementdebugger Statement?um/p1-90`The Number
extends clause of a class definition. Subclasssuper call to the NumberThis function performs the following steps when called:
The Number
The value ofNumber.EPSILON is the
This property has the attributes {[[Writable]]:
This function performs the following steps when called:
This function performs the following steps when called:
This function performs the following steps when called:
This function differs from the global isNaN function (
An
This function performs the following steps when called:
Due to rounding behaviour necessitated by precision limitations ofNumber.MAX_SAFE_INTEGER is shared with at least one other9007199254740992 and9007199254740993 evaluate to the Number value
The value ofNumber.MAX_SAFE_INTEGER is
This property has the attributes {[[Writable]]:
The value ofNumber.MAX_VALUE is the largest positive
This property has the attributes {[[Writable]]:
Due to rounding behaviour necessitated by precision limitations ofNumber.MIN_SAFE_INTEGER is shared with at least one other-9007199254740992 and-9007199254740993 evaluate to the Number value
The value ofNumber.MIN_SAFE_INTEGER is
This property has the attributes {[[Writable]]:
The value ofNumber.MIN_VALUE is the smallest positive value of the
In theNumber.MIN_VALUE must be the smallest non-zero positive value that can actually be represented by the implementation.
This property has the attributes {[[Writable]]:
The value ofNumber.NaN is
This property has the attributes {[[Writable]]:
The value ofNumber.NEGATIVE_INFINITY is
This property has the attributes {[[Writable]]:
The initial value of the
The initial value of the
The value ofNumber.POSITIVE_INFINITY is
This property has the attributes {[[Writable]]:
The initial value ofNumber.prototype is the
This property has the attributes {[[Writable]]:
TheNumber prototype object:
Unless explicitly stated otherwise, the methods of the Number prototype object defined below are not generic and the
The phrase “this Number value” within the specification of a method refers to the result returned by calling the abstract operation
The initial value ofNumber.prototype.constructor is
This method returns a String containing this Number value represented in decimal exponential notation with one digit before the significand's decimal point andfractionDigits digits after the significand's decimal point. IffractionDigits is
It performs the following steps when called:
For implementations that provide more accurate conversions than required by the rules above, it is recommended that the following alternative version of step
This method returns a String containing this Number value represented in decimal fixed-point notation withfractionDigits digits after the decimal point. IffractionDigits is
It performs the following steps when called:
The output oftoFixed may be more precise thantoString for some values because toString only prints enough significant digits to distinguish the number from adjacent Number values. For example,
(1000000000000000128).toString() returns(1000000000000000128).toFixed(0) returns
An ECMAScript implementation that includes the ECMA-402 Internationalization API must implement this method as specified in the ECMA-402 specification. If an ECMAScript implementation does not include the ECMA-402 API the following specification of this method is used:
This method produces a String value that represents this Number value formatted according to the conventions of thetoString.
The meanings of the optional parameters to this method are defined in the ECMA-402 specification; implementations that do not include ECMA-402 support must not use those parameter positions for anything else.
This method returns a String containing this Number value represented either in decimal exponential notation with one digit before the significand's decimal point and
It performs the following steps when called:
The optionalradix should be an
This method performs the following steps when called:
This method is not generic; it throws a
The
The abstract operation ThisNumberValue takes argumentvalue (an
Number instances are
The BigInt
new operator or to be subclassed. It may be used as the value of anextends clause of a class definition but asuper call to the BigIntThis function performs the following steps when called:
The abstract operation NumberToBigInt takes argumentnumber (a Number) and returns either a
The BigInt
This function performs the following steps when called:
This function performs the following steps when called:
The initial value ofBigInt.prototype is the
This property has the attributes {[[Writable]]:
TheBigInt prototype object:
The phrase “this BigInt value” within the specification of a method refers to the result returned by calling the abstract operation
The initial value ofBigInt.prototype.constructor is
An ECMAScript implementation that includes the ECMA-402 Internationalization API must implement this method as specified in the ECMA-402 specification. If an ECMAScript implementation does not include the ECMA-402 API the following specification of this method is used:
This method produces a String value that represents this BigInt value formatted according to the conventions of thetoString.
The meanings of the optional parameters to this method are defined in the ECMA-402 specification; implementations that do not include ECMA-402 support must not use those parameter positions for anything else.
The optionalradix should be an
This method performs the following steps when called:
This method is not generic; it throws a
The abstract operation ThisBigIntValue takes argumentvalue (an
The initial value of the
This property has the attributes {[[Writable]]:
BigInt instances are
The Math object:
new operator.In this specification, the phrase “the
The
This property has the attributes {[[Writable]]:
The
This property has the attributes {[[Writable]]:
The
This property has the attributes {[[Writable]]:
The
This property has the attributes {[[Writable]]:
The value ofMath.LOG10E is approximately the reciprocal of the value ofMath.LN10.
The
This property has the attributes {[[Writable]]:
The value ofMath.LOG2E is approximately the reciprocal of the value ofMath.LN2.
The
This property has the attributes {[[Writable]]:
The
This property has the attributes {[[Writable]]:
The value ofMath.SQRT1_2 is approximately the reciprocal of the value ofMath.SQRT2.
The
This property has the attributes {[[Writable]]:
The initial value of the
This property has the attributes {[[Writable]]:
The behaviour of the functionsacos,acosh,asin,asinh,atan,atanh,atan2,cbrt,cos,cosh,exp,expm1,hypot,log,log1p,log2,log10,pow,random,sin,sinh,tan, andtanh is not precisely specified here except to require specific results for certain argument values that represent boundary cases of interest. For other argument values, these functions are intended to compute approximations to the results of familiar mathematical functions, but some latitude is allowed in the choice of approximation algorithms. The general intent is that an implementer should be able to use the same mathematical library for ECMAScript on a given hardware platform that is available to C programmers on that platform.
Although the choice of algorithms is left to the implementation, it is recommended (but not specified by this standard) that implementations use the approximation algorithms forfdlibm, the freely distributable mathematical library from Sun Microsystems (http://www.netlib.org/fdlibm).
This function returns the absolute value ofx; the result has the same magnitude asx but has positive sign.
It performs the following steps when called:
This function returns the inverse cosine ofx. The result is expressed in radians and is in the
It performs the following steps when called:
This function returns the inverse hyperbolic cosine ofx.
It performs the following steps when called:
This function returns the inverse sine ofx. The result is expressed in radians and is in the
It performs the following steps when called:
This function returns the inverse hyperbolic sine ofx.
It performs the following steps when called:
This function returns the inverse tangent ofx. The result is expressed in radians and is in the
It performs the following steps when called:
This function returns the inverse hyperbolic tangent ofx.
It performs the following steps when called:
This function returns the inverse tangent of the quotient
It performs the following steps when called:
This function returns the cube root ofx.
It performs the following steps when called:
This function returns the smallest (closest to -∞)
It performs the following steps when called:
The value ofMath.ceil(x) is the same as the value of-Math.floor(-x).
This function performs the following steps when called:
Ifn is either
This function returns the cosine ofx. The argument is expressed in radians.
It performs the following steps when called:
This function returns the hyperbolic cosine ofx.
It performs the following steps when called:
The value ofMath.cosh(x) is the same as the value of(Math.exp(x) + Math.exp(-x)) / 2.
This function returns the exponential function ofx (e raised to the power ofx, wheree is the base of the natural logarithms).
It performs the following steps when called:
This function returns the result of subtracting 1 from the exponential function ofx (e raised to the power ofx, wheree is the base of the natural logarithms). The result is computed in a way that is accurate even when the value ofx is close to 0.
It performs the following steps when called:
This function returns the greatest (closest to +∞)
It performs the following steps when called:
The value ofMath.floor(x) is the same as the value of-Math.ceil(-x).
This function performs the following steps when called:
This function performs the following steps when called:
This operation is not the same as casting to binary32 and then to binary16 because of the possibility of double-rounding: consider the numberk =
Not all platforms provide native support for casting from binary64 to binary16. There are various libraries which can provide this, including the MIT-licensedhalf library. Alternatively, it is possible to first cast from binary64 to binary32 under roundTiesToEven and then check whether the result could lead to incorrect double-rounding. The cases which could can be handled explicitly by adjusting the mantissa of the binary32 value so that it is the value which would be produced by performing the initial cast under roundTiesToOdd. Casting the adjusted value to binary16 under roundTiesToEven then produces the correct value.
Given zero or more arguments, this function returns the square root of the sum of squares of its arguments.
It performs the following steps when called:
The
Implementations should take care to avoid the loss of precision from overflows and underflows that are prone to occur in naive implementations when this function is called with two or more arguments.
This function performs the following steps when called:
This function returns the natural logarithm ofx.
It performs the following steps when called:
This function returns the natural logarithm of 1 +x. The result is computed in a way that is accurate even when the value of x is close to zero.
It performs the following steps when called:
This function returns the base 10 logarithm ofx.
It performs the following steps when called:
This function returns the base 2 logarithm ofx.
It performs the following steps when called:
Given zero or more arguments, this function calls
It performs the following steps when called:
The comparison of values to determine the largest value is done using the
The
Given zero or more arguments, this function calls
It performs the following steps when called:
The comparison of values to determine the largest value is done using the
The
This function performs the following steps when called:
This function returns a Number value with positive sign, greater than or equal to
EachMath.random function created for distinct
This function returns the Number value that is closest tox and is integral. If two
It performs the following steps when called:
Math.round(3.5) returns 4, butMath.round(-3.5) returns -3.
The value ofMath.round(x) is not always the same as the value ofMath.floor(x + 0.5). Whenx isx is less thanMath.round(x) returnsMath.floor(x + 0.5) returnsMath.round(x) may also differ from the value ofMath.floor(x + 0.5)because of internal rounding when computingx + 0.5.
This function returns the sign ofx, indicating whetherx is positive, negative, or zero.
It performs the following steps when called:
This function returns the sine ofx. The argument is expressed in radians.
It performs the following steps when called:
This function returns the hyperbolic sine ofx.
It performs the following steps when called:
The value ofMath.sinh(x) is the same as the value of(Math.exp(x) - Math.exp(-x)) / 2.
This function returns the square root ofx.
It performs the following steps when called:
Given an
It performs the following steps when called:
The value ofsum can be computed without arbitrary-precision arithmetic by a variety of algorithms. One such is the "Grow-Expansion" algorithm given inAdaptive Precision Floating-Point Arithmetic and Fast Robust Geometric Predicates by Jonathan Richard Shewchuk. A more recent algorithm is given in "Fast exact summation using small and large superaccumulators", code for which is available athttps://gitlab.com/radfordneal/xsum.
This function returns the tangent ofx. The argument is expressed in radians.
It performs the following steps when called:
This function returns the hyperbolic tangent ofx.
It performs the following steps when called:
The value ofMath.tanh(x) is the same as the value of(Math.exp(x) - Math.exp(-x)) / (Math.exp(x) + Math.exp(-x)).
This function returns the integral part of the numberx, removing any fractional digits. Ifx is already integral, the result isx.
It performs the following steps when called:
The following
Time measurement in ECMAScript is analogous to time measurement in POSIX, in particular sharing definition in terms of the proleptic Gregorian calendar, anepoch of midnight at the beginning of 1 January 1970 UTC, and an accounting of every day as comprising exactly 86,400 seconds (each of which is 1000 milliseconds long).
An ECMAScripttime value
Time values do not account for UTC leap seconds—there are no time values representing instants within positive leap seconds, and there are time values representing instants removed from the UTC timeline by negative leap seconds. However, the definition of time values nonetheless yields piecewise alignment with UTC, with discontinuities only at leap second boundaries and zero difference outside of leap seconds.
A Number can exactly represent all
The exact moment of midnight at the beginning of 1 January 1970 UTC is represented by the time value
In the proleptic Gregorian calendar, leap years are precisely those which are both divisible by 4 and either divisible by 400 or not divisible by 100.
The 400 year cycle of the proleptic Gregorian calendar contains 97 leap years. This yields an average of 365.2425 days per year, which is 31,556,952,000 milliseconds. Therefore, the maximum range a Number could represent exactly with millisecond precision is approximately -285,426 to 285,426 years relative to 1970. The smaller range supported by a time value as specified in this section is approximately -273,790 to 273,790 years relative to 1970.
These constants are referenced by algorithms in the following sections.
The abstract operation Day takes argumentt (a
The abstract operation TimeWithinDay takes argumentt (a
The abstract operation DaysInYear takes argumenty (an
The abstract operation DayFromYear takes argumenty (an
The abstract operation TimeFromYear takes argumenty (an
The abstract operation YearFromTime takes argumentt (a
The abstract operation DayWithinYear takes argumentt (a
The abstract operation InLeapYear takes argumentt (a
The abstract operation MonthFromTime takes argumentt (a
The abstract operation DateFromTime takes argumentt (a
The abstract operation WeekDay takes argumentt (a
The abstract operation HourFromTime takes argumentt (a
The abstract operation MinFromTime takes argumentt (a
The abstract operation SecFromTime takes argumentt (a
The abstract operation msFromTime takes argumentt (a
The abstract operation GetUTCEpochNanoseconds takes argumentsyear (an
Time zones in ECMAScript are represented bytime zone identifiers, which are Strings composed entirely of code units in the
Aprimary time zone identifier is the preferred identifier for an available named time zone. Anon-primary time zone identifier is an identifier for an available named time zone that is not a primary time zone identifier. Anavailable named time zone identifier is either a primary time zone identifier or a non-primary time zone identifier. Each available named time zone identifier is associated with exactly one available named time zone. Each available named time zone is associated with exactly one primary time zone identifier and zero or more non-primary time zone identifiers.
ECMAScript implementations must support an available named time zone with the identifier
Implementations that follow the requirements for time zones as described in the ECMA-402 Internationalization API specification are calledtime zone aware. Time zone aware implementations must support available named time zones corresponding to the Zone and Link names of the IANA Time Zone Database, and only such names. In time zone aware implementations, a primary time zone identifier is a Zone name, and a non-primary time zone identifier is a Link name, respectively, in the IANA Time Zone Database except as specifically overridden by
The
When the input represents a local time occurring more than once because of a negative time zone transition (e.g. when daylight saving time ends or the time zone offset is decreased due to a time zone rule change), the returned
The default implementation of GetNamedTimeZoneEpochNanoseconds, to be used for ECMAScript implementations that do not include local political rules for any time zones, performs the following steps when called:
It is required for
1:30 AM on 5 November 2017 in America/New_York is repeated twice, so GetNamedTimeZoneEpochNanoseconds(
2:30 AM on 12 March 2017 in America/New_York does not exist, so GetNamedTimeZoneEpochNanoseconds(
The
The returned
The default implementation of GetNamedTimeZoneOffsetNanoseconds, to be used for ECMAScript implementations that do not include local political rules for any time zones, performs the following steps when called:
Time zone offset values may be positive or negative.
ATime Zone Identifier Record is a
Time Zone Identifier Records have the fields listed in
| Field Name | Value | Meaning |
|---|---|---|
| [[Identifier]] | a String | An |
| [[PrimaryIdentifier]] | a String | The |
If[[Identifier]] is a
The
The
To ensure the level of functionality that implementations commonly provide in the methods of the Date object, it is recommended that SystemTimeZoneIdentifier return an IANA time zone name corresponding to the
For example, if the
The abstract operation LocalTime takes argumentt (a
If political rules for the local timet are not available within the implementation, the result ist because
It is required for
Two different input
The abstract operation UTC takes argumentt (a Number) and returns a
Inputt is nominally a
If political rules for the local timet are not available within the implementation, the result ist because
It is required for
1:30 AM on 5 November 2017 in America/New_York is repeated twice (fall backward), but it must be interpreted as 1:30 AM UTC-04 instead of 1:30 AM UTC-05. In UTC(
2:30 AM on 12 March 2017 in America/New_York does not exist, but it must be interpreted as 2:30 AM UTC-05 (equivalent to 3:30 AM UTC-04). In UTC(
The abstract operation MakeTime takes argumentshour (a Number),min (a Number),sec (a Number), andms (a Number) and returns a Number. It calculates a number of milliseconds. It performs the following steps when called:
The arithmetic in MakeTime is floating-point arithmetic, which is not associative, so the operations must be performed in the correct order.
The abstract operation MakeDay takes argumentsyear (a Number),month (a Number), anddate (a Number) and returns a Number. It calculates a number of days. It performs the following steps when called:
The abstract operation MakeDate takes argumentsday (a Number) andtime (a Number) and returns a Number. It calculates a number of milliseconds. It performs the following steps when called:
The abstract operation MakeFullYear takes argumentyear (a Number) and returns an
The abstract operation TimeClip takes argumenttime (a Number) and returns a Number. It calculates a number of milliseconds. It performs the following steps when called:
ECMAScript defines a string interchange format for date-times based upon a simplification of the ISO 8601 calendar date extended format. The format is as follows:YYYY-MM-DDTHH:mm:ss.sssZ
Where the elements are as follows:
YYYY | is the year in the proleptic Gregorian calendar as four decimal digits from 0000 to 9999, or as an |
- | |
MM | is the month of the year as two decimal digits from 01 (January) to 12 (December). |
DD | is the day of the month as two decimal digits from 01 to 31. |
T | |
HH | is the number of complete hours that have passed since midnight as two decimal digits from 00 to 24. |
: | |
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. |
. | |
sss | is the number of complete milliseconds since the start of the second as three decimal digits. |
Z | is the UTC offset representation specified asHH:mm (a subset of the |
This format includes date-only forms:
YYYYYYYY-MMYYYY-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 UTC offset representation appended:
THH:mmTHH:mm:ssTHH:mm:ss.sss
A string containing out-of-bounds or nonconforming elements is not a valid instance of this format.
As every day both starts and ends with midnight, the two notations00:00 and24:00 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 and1995-02-05T00:00. This interpretation of the latter form as "end of a calendar day" is consistent with ISO 8601, even though that specification reserves it for describing time intervals and does not permit it within representations of single points in time.
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, both ISO 8601 and this format specify numeric representations of time zone offsets.
Covering the fullDate.parse
Examples of date-
| -271821-04-20T00:00:00Z | 271822 B.C. |
| -000001-01-01T00:00:00Z | 2 B.C. |
| +000000-01-01T00:00:00Z | 1 B.C. |
| +000001-01-01T00:00:00Z | 1 A.D. |
| +001970-01-01T00:00:00Z | 1970 A.D. |
| +002009-12-15T00:00:00Z | 2009 A.D. |
| +275760-09-13T00:00:00Z | 275760 A.D. |
ECMAScript defines a string interchange format for UTC offsets, derived from ISO 8601. The format is described by the following grammar.
The abstract operation IsTimeZoneOffsetString takes argumentoffsetString (a String) and returns a Boolean. The return value indicates whetheroffsetString conforms to the grammar given by
The abstract operation ParseTimeZoneOffsetString takes argumentoffsetString (a String) and returns an
The Date
extends clause of a class definition. Subclasssuper call to the DateThis function performs the following steps when called:
parse method (The Date
This function returns the
This function applies the
If the String conforms to theMM orDD elements are absent,HH,mm, orss elements are absent,sss element is absent,
Ifx is any Date whose milliseconds amount is zero within a particular implementation of ECMAScript, then all of the following expressions should produce the same numeric value in that implementation, if all the properties referenced have their initial values:
x.valueOf()Date.parse(x.toString())Date.parse(x.toUTCString())Date.parse(x.toISOString())However, the expression
Date.parse(x.toLocaleString())is not required to produce the same Number value as the preceding three expressions and, in general, the value produced by this function istoString ortoUTCString method.
The initial value ofDate.prototype is the
This property has the attributes {[[Writable]]:
This function performs the following steps when called:
The
This function differs from the Date
TheDate prototype object:
Unless explicitly defined otherwise, the methods of the Date prototype object defined below are not generic and the
The initial value ofDate.prototype.constructor is
This method performs the following steps when called:
This method performs the following steps when called:
This method performs the following steps when called:
This method performs the following steps when called:
This method performs the following steps when called:
This method performs the following steps when called:
This method performs the following steps when called:
This method performs the following steps when called:
This method performs the following steps when called:
This method performs the following steps when called:
This method performs the following steps when called:
This method performs the following steps when called:
This method performs the following steps when called:
This method performs the following steps when called:
This method performs the following steps when called:
This method performs the following steps when called:
This method performs the following steps when called:
This method performs the following steps when called:
This method performs the following steps when called:
This method performs the following steps when called:
The
Ifmonth is not present, this method behaves as ifmonth was present with the valuegetMonth(). Ifdate is not present, it behaves as ifdate was present with the valuegetDate().
This method performs the following steps when called:
The
Ifmin is not present, this method behaves as ifmin was present with the valuegetMinutes(). Ifsec is not present, it behaves as ifsec was present with the valuegetSeconds(). Ifms is not present, it behaves as ifms was present with the valuegetMilliseconds().
This method performs the following steps when called:
This method performs the following steps when called:
The
Ifsec is not present, this method behaves as ifsec was present with the valuegetSeconds(). Ifms is not present, this behaves as ifms was present with the valuegetMilliseconds().
This method performs the following steps when called:
The
Ifdate is not present, this method behaves as ifdate was present with the valuegetDate().
This method performs the following steps when called:
The
Ifms is not present, this method behaves as ifms was present with the valuegetMilliseconds().
This method performs the following steps when called:
This method performs the following steps when called:
This method performs the following steps when called:
The
Ifmonth is not present, this method behaves as ifmonth was present with the valuegetUTCMonth(). Ifdate is not present, it behaves as ifdate was present with the valuegetUTCDate().
This method performs the following steps when called:
The
Ifmin is not present, this method behaves as ifmin was present with the valuegetUTCMinutes(). Ifsec is not present, it behaves as ifsec was present with the valuegetUTCSeconds(). Ifms is not present, it behaves as ifms was present with the valuegetUTCMilliseconds().
This method performs the following steps when called:
This method performs the following steps when called:
The
Ifsec is not present, this method behaves as ifsec was present with the valuegetUTCSeconds(). Ifms is not present, it behaves as ifms was present with the value return bygetUTCMilliseconds().
This method performs the following steps when called:
The
Ifdate is not present, this method behaves as ifdate was present with the valuegetUTCDate().
This method performs the following steps when called:
The
Ifms is not present, this method behaves as ifms was present with the valuegetUTCMilliseconds().
This method performs the following steps when called:
This method performs the following steps when called:
This method provides a String representation of a Date for use byJSON.stringify (
It performs the following steps when called:
The argument is ignored.
This method is intentionally generic; it does not require that itstoISOString method.
An ECMAScript implementation that includes the ECMA-402 Internationalization API must implement this method as specified in the ECMA-402 specification. If an ECMAScript implementation does not include the ECMA-402 API the following specification of this method is used:
This method returns a String value. The contents of the String are
The meaning of the optional parameters to this method are defined in the ECMA-402 specification; implementations that do not include ECMA-402 support must not use those parameter positions for anything else.
An ECMAScript implementation that includes the ECMA-402 Internationalization API must implement this method as specified in the ECMA-402 specification. If an ECMAScript implementation does not include the ECMA-402 API the following specification of this method is used:
This method returns a String value. The contents of the String are
The meaning of the optional parameters to this method are defined in the ECMA-402 specification; implementations that do not include ECMA-402 support must not use those parameter positions for anything else.
An ECMAScript implementation that includes the ECMA-402 Internationalization API must implement this method as specified in the ECMA-402 specification. If an ECMAScript implementation does not include the ECMA-402 API the following specification of this method is used:
This method returns a String value. The contents of the String are
The meaning of the optional parameters to this method are defined in the ECMA-402 specification; implementations that do not include ECMA-402 support must not use those parameter positions for anything else.
This method performs the following steps when called:
For any Dated such thatd.[[DateValue]] is evenly divisible by 1000, the result ofDate.parse(d.toString()) =d.valueOf(). See
This method is not generic; it throws a
The abstract operation TimeString takes argumenttv (a Number, but not
The abstract operation DateString takes argumenttv (a Number, but not
| Number | Name |
|---|---|
| Number | Name |
|---|---|
The abstract operation TimeZoneString takes argumenttv (an
The abstract operation ToDateString takes argumenttv (an
This method performs the following steps when called:
This method returns a String value representing the instant in time corresponding to the
It performs the following steps when called:
This method performs the following steps when called:
This method is called by ECMAScript language operators to convert a Date to a primitive value. The allowed values forhint are
It performs the following steps when called:
This property has the attributes {[[Writable]]:
The value of the
Date instances are