How to use setMonth in JavaScript

Posted in JavaScript | JavaScript Objects on August 06, 2019

In this article, I will explain use of setMonth() method in JavaScript date object.

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.

Syntax

Date.setMonth(month,day)

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.

Example

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

<!DOCTYPE html>

<html>

<body>

<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>

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;

}

</script>

</body>

</html>

Output1

Output2

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