How to use setMonth in JavaScript

In this article, I will explain use of setMonth() method in JavaScript date object.
  • 1702
JavaScript setMonth() method
  • setMonth() method of date method sets the month for a given date according to local time.

  • setMonth() method can also be used to set the day of the month.



  • month : month is required parameter. An integer is representing the day of month and it's value between 0 and 11.

  • day : day is optional parameter. A number is representing the day and it's value between 1 and 31.


In the following example show to setMonth() method set the date to be the last day of last month.

<!DOCTYPE html>



<h3 style="color:blue ">JavaScript setMonth() Method Example</h3>

<p id="demo">Click for display the date after set the date to be the last day of last month.</p>

<button onclick="myFunction()">Click On</button>

<script type="text/javascript">

    function myFunction() {

        var d = new Date();

        d.setMonth(d.getMonth(), 0);

        var x = document.getElementById("demo");

        x.innerHTML = "After set the date to be the last day of last month : " + d;






setMonth 1.jpg


setMonth 2.jpg

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