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JavaScript setDate() Method

Date Object Reference JavaScript Date Object

Example

Set the day of the month:

var d = new Date();
d.setDate(15);

The result of d will be:


Try it yourself »


Definition and Usage

The setDate() method sets the day of the month to the date object.


Browser Support

Internet Explorer Firefox Opera Google Chrome Safari

The setDate() method is supported in all major browsers.


Syntax

Date.setDate(day)

Parameter Values

Parameter Description
day Required. An integer representing the day of a month.

Expected values are 1-31, but other values are allowed:

  • 0 will result in the last day of the previous month
  • -1 will result in the day before the last day of the previous month

If the month has 31 days:

  • 32 will result in the first day of the next month

If the month has 30 days:

  • 32 will result in the second day of the next month

Return Value

Type Description
Number Milliseconds between the date object and midnight January 1 1970

Technical Details

JavaScript Version: 1.0


More Examples

Example

Set the day of the month to be the last day of the previous month:

var d = new Date();
d.setDate(0);

The result of d will be:


Try it yourself »

Example

Set the day of the month, to a specified date:

var d = new Date("July 21, 1983 01:15:00");
d.setDate(15);

The result of d will be:


Try it yourself »


Date Object Reference JavaScript Date Object

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