JavaScript setMonth() method
JavaScript setMonth() method is used to set month for the date object.
Syntax:
| dateObject.setMonth( month ,day ); |
Where month is a number between 0 to 11 and its
representations are as follows :
| Month
Number |
Represents
Month |
| 0 |
January |
| 1 |
February |
| 2 |
March |
| 3 |
April |
| 4 |
May |
| 5 |
June |
| 6 |
July |
| 7 |
August |
| 8 |
September |
| 9 |
October |
| 10 |
November |
| 11 |
December |
The parameter day is optional and consists a numerical value between 1
to 31 that represents the day. Note that we must need to have a date object to
call this method.
Description of code :
To illustrate the use of setMonth() method we have created a simple
html page and in this page we have provided a text box. User can enter month
number here. We also have suggested that user must input the month number
between 0 to11. If user enters any thing else than valid month
number between 0 to 11 then it shows "Invalid month
number" message into alert method.
When user clicks on the button "Set Month" after inserting
month it checks that whether month number provided is valid or not. Here is the
full example code :
<html>
<head>
<script language="JavaScript">
function setMonthFunction()
{
var dt= new Date();
var month = document.getElementById('monthValue').value;
if(month >=0 && month <=11){
alert("Current date :" +dt);
dt.setMonth(month);
alert("Date after set :"+dt);
return true;
}
else
{
alert("Invalid month number");
return false;
}
}
</script>
</head>
<body>
<div style="background: #ff9900; width:'100%';"
align="center">
<font color="#0000ff" size="12pt">
<b>setMonth() Example</b>
</font>
</div>
<center>
Insert any number between 0 to 11 to set Month
<input type="text" id="monthValue" /><br>
<input type="button" value="Set Month"
onClick="return setMonthFunction();"/>
</center>
</body>
</html>
|
Output :
Input valid month number to set into setMonth() method.
If user enters any thing else than a valid month number then it will show
message "Invalid month number" into an alert message. For
example if we enter Jan, Feb or any thing other than a number
between 0 to 11 then it shows an alert message.
If we enter "12" and click on the button "Set
Month",
date before calling setMonth() method will be look like this
Date after calling the method setMonth() would look like as follows :
Download Source Code
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