ES6-日付

ザ・ Date objectJavaScript言語に組み込まれているデータ型です。新しい日付オブジェクトが作成されますDate () 次の構文に示すように。

Dateオブジェクトが作成されると、いくつかのメソッドを使用してオブジェクトを操作できます。ほとんどのメソッドでは、現地時間またはUTC(ユニバーサル、またはGMT)時間を使用して、オブジェクトの年、月、日、時間、分、秒、およびミリ秒のフィールドを取得および設定できます。

ECMAScript標準では、Dateオブジェクトが1970年1月1日前後の1億日以内に、任意の日付と時刻をミリ秒の精度で表すことができる必要があります。これはプラスマイナス273、785年の範囲であるため、JavaScriptは275755年までの日付と時刻を表すことができます。

次の構文のいずれかを使用して、を使用してDateオブジェクトを作成できます。 Date () constructor

new Date( ) 
new Date(milliseconds) 
new Date(datestring) 
new Date(year,month,date[,hour,minute,second,millisecond ])

Note −括弧内のパラメーターは常にオプションです。

日付プロパティ

これは、Dateオブジェクトのプロパティとその説明のリストです。

シニア番号 プロパティと説明
1 constructor

Specifies the function that creates an object's prototype

2 prototype

The prototype property allows you to add properties and methods to an object

Date Methods

Following is a list of different date methods along with the description.

Sr.No Method & Description
1 Date()

Returns today's date and time

2 getDate()

Returns the day of the month for the specified date according to the local time

3 getDay()

Returns the day of the week for the specified date according to the local time

4 getFullYear()

Returns the year of the specified date according to the local time

5 getHours()

Returns the hour in the specified date according to the local time

6 getMilliseconds()

Returns the milliseconds in the specified date according to the local time

7 getMinutes()

Returns the minutes in the specified date according to the local time

8 getMonth()

Returns the month in the specified date according to the local time

9 getSeconds()

Returns the seconds in the specified date according to the local time

10 getTime()

Returns the numeric value of the specified date as the number of milliseconds since January 1, 1970, 00:00:00 UTC

11 getTimezoneOffset()

Returns the time-zone offset in minutes for the current locale

12 getUTCDate()

Returns the day (date) of the month in the specified date according to the universal time

13 getUTCDay()

Returns the day of the week in the specified date according to the universal time

14 getUTCFullYear()

Returns the year in the specified date according to the universal time

15 getutcHours()

Returns the hours in the specified date according to the universal time

16 getUTCMilliseconds()

Returns the milliseconds in the specified date according to the universal time

17 getUTCMinutes()

Returns the minutes in the specified date according to the universal time

18 getUTCMonth()

Returns the month in the specified date according to the universal time

19 getUTCSeconds()

Returns the seconds in the specified date according to the universal time

20 setDate()

Sets the day of the month for a specified date according to the local time

21 setFullYear()

Sets the full year for a specified date according to the local time

22 setHours()

Sets the hours for a specified date according to the local time

23 setMilliseconds()

Sets the milliseconds for a specified date according to the local time

24 setMinutes()

Sets the minutes for a specified date according to the local time

25 setMonth()

Sets the month for a specified date according to the local time

26 setSeconds()

Sets the seconds for a specified date according to the local time

27 setTime()

Sets the Date object to the time represented by a number of milliseconds since January 1, 1970, 00:00:00 UTC

28 setUTCDate()

Sets the Date object to the time represented by a number of milliseconds since January 1, 1970, 00:00:00 UTC

29 setUTCFullYear()

Sets the full year for a specified date according to the universal time

30 setUTCHours()

Sets the hour for a specified date according to the universal time

31 setUTCMilliseconds()

Sets the milliseconds for a specified date according to the universal time

32 setUTCMinutes()

Sets the minutes for a specified date according to the universal time

33 setUTCMonth()

Sets the month for a specified date according to the universal time

34 setUTCSeconds()

Sets the seconds for a specified date according to the universal time

35 todatestring()

Returns the "date" portion of the Date as a human-readable string

36 toLocaleDateString()

Returns the "date" portion of the Date as a string, using the current locale's conventions

37 toLocaleString()

Converts a date to a string, using the current locale's conventions

38 toLocaleTimeString()

Returns the "time" portion of the Date as a string, using the current locale's conventions

39 toString()

Returns a string representing the specified Date object

40 toTimeString()

Returns the "time" portion of the Date as a human-readable string

41 toUTCString()

Converts a date to a string, using the universal time convention

42 valueOf()

Returns the primitive value of a Date object