The Date object is used to work with dates and times.
The Date object is used to work with dates and times.
We define a Date object with the new keyword. The following code line defines a Date object called myDate:
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var myDate = new Date() |
Note: The Date object will automatically hold the current date and time as its initial value!
We can easily manipulate the date by using the methods available for the Date object.
In the example below we set a Date object to a specific date (14th January 2010):
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var myDate = new Date() |
And in the following example we set a Date object to be 5 days into the future:
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var
myDate = new Date() |
Note: If adding five days to a date shifts the month or year, the changes are handled automatically by the Date object itself!
The Date object is also used to compare two dates.
The following example compares today's date with the 14th January 2010:
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var
myDate = new Date() |
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Method |
Description |
| Date() | Returns today's date and time |
| getDate() | Returns the day of the month from a Date object (from 1-31) |
| getDay() | Returns the day of the week from a Date object (from 0-6) |
| getMonth() | Returns the month from a Date object (from 0-11) |
| getFullYear() | Returns the year, as a four-digit number, from a Date object |
| getYear() | Returns the year, as a two-digit or a four-digit number, from a Date object. Use getFullYear() instead |
| getHours() | Returns the hour of a Date object (from 0-23) |
| getMinutes() | Returns the minutes of a Date object (from 0-59) |
| getSeconds() | Returns the seconds of a Date object (from 0-59) |
| getMilliseconds() | Returns the milliseconds of a Date object (from 0-999) |
| getTime() | Returns the number of milliseconds since midnight Jan 1, 1970 |
| getTimezoneOffset() | Returns the difference in minutes between local time and Greenwich Mean Time (GMT) |
| getUTCDate() | Returns the day of the month from a Date object according to universal time (from 1-31) |
| getUTCDay() | Returns the day of the week from a Date object according to universal time (from 0-6) |
| getUTCMonth() | Returns the month from a Date object according to universal time (from 0-11) |
| getUTCFullYear() | Returns the four-digit year from a Date object according to universal time |
| getUTCHours() | Returns the hour of a Date object according to universal time (from 0-23) |
| getUTCMinutes() | Returns the minutes of a Date object according to universal time (from 0-59) |
| getUTCSeconds() | Returns the seconds of a Date object according to universal time (from 0-59) |
| getUTCMilliseconds() | Returns the milliseconds of a Date object according to universal time (from 0-999) |
| parse() | Takes a date string and returns the number of milliseconds since midnight of January 1, 1970 |
| setDate() | Sets the day of the month in a Date object (from 1-31) |
| setMonth() | Sets the month in a Date object (from 0-11) |
| setFullYear() | Sets the year in a Date object (four digits) |
| setYear() | Sets the year in the Date object (two or four digits). Use setFullYear() instead |
| setHours() | Sets the hour in a Date object (from 0-23) |
| setMinutes() | Set the minutes in a Date object (from 0-59) |
| setSeconds() | Sets the seconds in a Date object (from 0-59) |
| setMilliseconds() | Sets the milliseconds in a Date object (from 0-999) |
| setTime() | Calculates a date and time by adding or subtracting a specified number of milliseconds to/from midnight January 1, 1970 |
| setUTCDate() | Sets the day of the month in a Date object according to universal time (from 1-31) |
| setUTCMonth() | Sets the month in a Date object according to universal time (from 0-11) |
| setUTCFullYear() | Sets the year in a Date object according to universal time (four digits) |
| setUTCHours() | Sets the hour in a Date object according to universal time (from 0-23) |
| setUTCMinutes() | Set the minutes in a Date object according to universal time (from 0-59) |
| setUTCSeconds() | Set the seconds in a Date object according to universal time (from 0-59) |
| setUTCMilliseconds() | Sets the milliseconds in a Date object according to universal time (from 0-999) |
| toSource() | Represents the source code of an object |
| toString() | Converts a Date object to a string |
| toGMTString() | Converts a Date object, according to Greenwich time, to a string. Use toUTCString() instead |
| toUTCString() | Converts a Date object, according to universal time, to a string |
| toLocaleString() | Converts a Date object, according to local time, to a string |
| UTC() | Takes a date and returns the number of milliseconds since midnight of January 1, 1970 according to universal time |
| valueOf() | Returns the primitive value of a Date object |
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Property |
Description |
| constructor | A reference to the function that created the object |
| prototype | Allows you to add properties and methods to the object |
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