setMonth() method sets the month for a specified date according to the currently set year.
- An integer between 0 and 11, representing the months January through December.
- Optional. An integer from 1 to 31, representing the day of the month.
The number of milliseconds between 1 January 1970 00:00:00 UTC and the updated date.
If you do not specify the
dayValue parameter, the value returned from the
getDate() method is used.
If a parameter you specify is outside of the expected range,
setMonth() attempts to update the date information in the
Date object accordingly. For example, if you use 15 for
monthValue, the year will be incremented by 1, and 3 will be used for month.
The current day of month will have an impact on the behaviour of this method. Conceptually it will add the number of days given by the current day of the month to the 1st day of the new month specified as the parameter, to return the new date. For example, if the current value is 31st August 2016, calling setMonth with a value of 1 will return 2nd March 2016. This is because in 2016 February had 29 days.
var theBigDay = new Date(); theBigDay.setMonth(6); //Watch out for end of month transitions var endOfMonth = new Date(2016, 7, 31); endOfMonth.setMonth(1); console.log(endOfMonth); //Wed Mar 02 2016 00:00:00
|ECMAScript Latest Draft (ECMA-262)
The definition of 'Date.prototype.setMonth' in that specification.
The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
|Chrome Full support 1||Edge Full support 12||Firefox Full support 1||IE Full support 3||Opera Full support Yes||Safari Full support 1||WebView Android Full support 1||Chrome Android Full support 18||Firefox Android Full support 4||Opera Android Full support Yes||Safari iOS Full support 1||Samsung Internet Android Full support 1.0||nodejs Full support Yes|
- Full support
- Full support