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JavaScript Date Object
The Date object is used to work with dates and times.
Examples
Date
Returns today's date including date, month, and year. Note that the getMonth
method returns 0 in January, 1 in February etc. So add 1 to the getMonth method
to display the correct date.
Time
Returns the current local time including hour, minutes, and seconds. To return
the GMT time use getUTCHours, getUTCMinutes etc.
Set date
You can also set the date or time into the date object, with the setDate,
setHour etc. Note that in this example, only the FullYear is set.
UTC time
The getUTCDate method returns the Universal Coordinated Time which is the
time set by the World Time Standard.
Display weekday
A simple script that allows you to write the name of the current day instead of
the number. Note that the array object is used to store the names, and that
Sunday=0, Monday=1 etc.
Display full date
How to write a complete date with the name of the day and the name of the month.
Display time
How to display the time on your pages. Note that this script is similar to the
Time example above, only this script writes the time in an input field. And it
continues writing the time one time per second.
The Date object
The 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:
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 Explorer, ECMA: Web Standard
| Methods |
Explanation |
NN |
IE |
ECMA |
| Date() |
Returns a Date object |
2.0 |
3.0 |
1.0 |
| getDate() |
Returns the date of a Date object (from 1-31) |
2.0 |
3.0 |
1.0 |
| getDay() |
Returns the day of a Date object (from 0-6. 0=Sunday,
1=Monday, etc.) |
2.0 |
3.0 |
1.0 |
| getMonth() |
Returns the month of a Date object (from 0-11.
0=January, 1=February, etc.) |
2.0 |
3.0 |
1.0 |
| getFullYear() |
Returns the year of a Date object (four digits) |
4.0 |
4.0 |
1.0 |
| getYear() |
Returns the year of a Date object (from 0-99). Use getFullYear
instead !! |
2.0 |
3.0 |
1.0 |
| getHours() |
Returns the hour of a Date object (from 0-23) |
2.0 |
3.0 |
1.0 |
| getMinutes() |
Returns the minute of a Date object (from 0-59) |
2.0 |
3.0 |
1.0 |
| getSeconds() |
Returns the second of a Date object (from 0-59) |
2.0 |
3.0 |
1.0 |
| getMilliseconds() |
Returns the millisecond of a Date object (from 0-999) |
4.0 |
4.0 |
1.0 |
| getTime() |
Returns the number of milliseconds since midnight 1/1-1970 |
2.0 |
3.0 |
1.0 |
| getTimezoneOffset() |
Returns the time difference between the user's computer and
GMT |
2.0 |
3.0 |
1.0 |
| getUTCDate() |
Returns the date of a Date object in universal (UTC) time |
4.0 |
4.0 |
1.0 |
| getUTCDay() |
Returns the day of a Date object in universal time |
4.0 |
4.0 |
1.0 |
| getUTCMonth() |
Returns the month of a Date object in universal time |
4.0 |
4.0 |
1.0 |
| getUTCFullYear() |
Returns the four-digit year of a Date object in universal
time |
4.0 |
4.0 |
1.0 |
| getUTCHours() |
Returns the hour of a Date object in universal time |
4.0 |
4.0 |
1.0 |
| getUTCMinutes() |
Returns the minutes of a Date object in universal time |
4.0 |
4.0 |
1.0 |
| getUTCSeconds() |
Returns the seconds of a Date object in universal time |
4.0 |
4.0 |
1.0 |
| getUTCMilliseconds() |
Returns the milliseconds of a Date object in universal time |
4.0 |
4.0 |
1.0 |
| parse() |
Returns a string date value that holds the number of milliseconds since January 01 1970 00:00:00 |
2.0 |
3.0 |
1.0 |
| setDate() |
Sets the date of the month in the Date object (from 1-31) |
2.0 |
3.0 |
1.0 |
| setFullYear() |
Sets the year in the Date object (four digits) |
4.0 |
4.0 |
1.0 |
| setHours() |
Sets the hour in the Date object (from 0-23) |
2.0 |
3.0 |
1.0 |
| setMilliseconds() |
Sets the millisecond in the Date object (from 0-999) |
4.0 |
4.0 |
1.0 |
| setMinutes() |
Set the minute in the Date object (from 0-59) |
2.0 |
3.0 |
1.0 |
| setMonth() |
Sets the month in the Date object (from 0-11. 0=January,
1=February) |
2.0 |
3.0 |
1.0 |
| setSeconds() |
Sets the second in the Date object (from 0-59) |
2.0 |
3.0 |
1.0 |
| setTime() |
Sets the milliseconds after 1/1-1970 |
2.0 |
3.0 |
1.0 |
| setYear() |
Sets the year in the Date object (00-99) |
2.0 |
3.0 |
1.0 |
| setUTCDate() |
Sets the date in the Date object, in universal time (from
1-31) |
4.0 |
4.0 |
1.0 |
| setUTCDay() |
Sets the day in the Date object, in universal time (from
0-6. Sunday=0, Monday=1, etc.) |
4.0 |
4.0 |
1.0 |
| setUTCMonth() |
Sets the month in the Date object, in universal time (from
0-11. 0=January, 1=February) |
4.0 |
4.0 |
1.0 |
| setUTCFullYear() |
Sets the year in the Date object, in universal time (four
digits) |
4.0 |
4.0 |
1.0 |
| setUTCHour() |
Sets the hour in the Date object, in universal time (from
0-23) |
4.0 |
4.0 |
1.0 |
| setUTCMinutes() |
Sets the minutes in the Date object, in universal time (from
0-59) |
4.0 |
4.0 |
1.0 |
| setUTCSeconds() |
Sets the seconds in the Date object, in universal time (from
0-59) |
4.0 |
4.0 |
1.0 |
| setUTCMilliseconds() |
Sets the milliseconds in the Date object, in universal time
(from 0-999) |
4.0 |
4.0 |
1.0 |
| toGMTString() |
Converts the Date object to a string, set to GMT time zone |
2.0 |
3.0 |
1.0 |
| toLocaleString() |
Converts the Date object to a string, set to the current
time zone |
2.0 |
3.0 |
1.0 |
| toString() |
Converts the Date object to a string |
2.0 |
4.0 |
1.0 |
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