JavaScript Date Object

JavaScript Date Object
Date ObjectThe Date object is used to work with dates and times. You create an instance of the Date object with the “new” keyword.To store the current date in a variable called “my_date”:

After creating an instance of the Date object, you can access all the methods of the object from the “my_date” variable. If, for example, you want to return the date (from 1-31) of a Date object, you should write the following:

my_date.getDate()

You can also write a date inside the parentheses of the Date() object, like this:

new Date(“Month dd, yyyy hh:mm:ss”) new Date(“Month dd, yyyy”) new Date(yy,mm,dd,hh,mm,ss) new Date(yy,mm,dd) new Date(milliseconds)

Here is how you can create a Date object for each of the ways above:

var my_date=new Date(“October 12, 1988 13:14:00”) var my_date=new Date(“October 12, 1988”) var my_date=new Date(88,09,12,13,14,00) var my_date=new Date(88,09,12) var my_date=new Date(500)

The Date object’s methods are described below:

NN: Netscape, IE: Internet ExplorerMethods

Syntax: object.method_name()

Method Description NN IE
Date() Returns a Date object 2 3
getDate() Returns the date of a Date object (from 1-31) 2 3
getDay() Returns the day of a Date object (from 0-6. 0=Sunday, 1=Monday, etc.) 2 3
getMonth() Returns the month of a Date object (from 0-11. 0=January, 1=February, etc.) 2 3
getFullYear() Returns the year of a Date object (four digits) 4 4
getYear() Returns the year of a Date object (from 0-99). Use getFullYear instead !! 2 3
getHours() Returns the hour of a Date object (from 0-23) 2 3
getMinutes() Returns the minute of a Date object (from 0-59) 2 3
getSeconds() Returns the second of a Date object (from 0-59) 2 3
getMilliseconds() Returns the millisecond of a Date object (from 0-999) 4 4
getTime() Returns the number of milliseconds since midnight 1/1-1970 2 3
getTimezoneOffset() Returns the time difference between the user’s computer and GMT 2 3
getUTCDate() Returns the date of a Date object in universal (UTC) time 4 4
getUTCDay() Returns the day of a Date object in universal time 4 4
getUTCMonth() Returns the month of a Date object in universal time 4 4
getUTCFullYear() Returns the four-digit year of a Date object in universal time 4 4
getUTCHours() Returns the hour of a Date object in universal time 4 4
getUTCMinutes() Returns the minutes of a Date object in universal time 4 4
getUTCSeconds() Returns the seconds of a Date object in universal time 4 4
getUTCMilliseconds() Returns the milliseconds of a Date object in universal time 4 4
parse() Returns a string date value that holds the number of milliseconds since January 01 1970 00:00:00 2 3
setDate() Sets the date of the month in the Date object (from 1-31) 2 3
setFullYear() Sets the year in the Date object (four digits) 4 4
setHours() Sets the hour in the Date object (from 0-23) 2 3
setMilliseconds() Sets the millisecond in the Date object (from 0-999) 4 4
setMinutes() Set the minute in the Date object (from 0-59) 2 3
setMonth() Sets the month in the Date object (from 0-11. 0=January, 1=February) 2 3
setSeconds() Sets the second in the Date object (from 0-59) 2 3
setTime() Sets the milliseconds after 1/1-1970 2 3
setYear() Sets the year in the Date object (00-99) 2 3
setUTCDate() Sets the date in the Date object, in universal time (from 1-31) 4 4
setUTCDay() Sets the day in the Date object, in universal time (from 0-6. Sunday=0, Monday=1, etc.) 4 4
setUTCMonth() Sets the month in the Date object, in universal time (from 0-11. 0=January, 1=February) 4 4
setUTCFullYear() Sets the year in the Date object, in universal time (four digits) 4 4
setUTCHour() Sets the hour in the Date object, in universal time (from 0-23) 4 4
setUTCMinutes() Sets the minutes in the Date object, in universal time (from 0-59) 4 4
setUTCSeconds() Sets the seconds in the Date object, in universal time (from 0-59) 4 4
setUTCMilliseconds() Sets the milliseconds in the Date object, in universal time (from 0-999) 4 4
toGMTString() Converts the Date object to a string, set to GMT time zone 2 3
toLocaleString() Converts the Date object to a string, set to the current time zone 2 3
toString() Converts the Date object to a string 2 4

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