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Friday, February 17, 2017

ES6 - Date

The Date object is a datatype built into the JavaScript language. Date objects are created with the new Date () as shown in the following syntax.
Once a Date object is created, a number of methods allow you to operate on it. Most methods simply allow you to get and set the year, month, day, hour, minute, second, and millisecond fields of the object, using either local time or UTC (universal, or GMT) time.

The ECMAScript standard requires the Date object to be able to represent any date and time, to millisecond precision, within 100 million days before or after 1/1/1970. This is a range of plus or minus 273,785 years, so JavaScript can represent date and time till the year 275755.
You can use any of the following syntax to create a Date object using Date () constructor.
new Date( ) 
new Date(milliseconds) 
new Date(datestring) 
new Date(year,month,date[,hour,minute,second,millisecond ])
Note − Parameters in the brackets are always optional.

Date Properties

Here is a list of the properties of the Date object along with their description.
Sr.No Property & Description
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

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