JavaScript Date setFullYear() Method

Last Updated : 01 Jul, 2020

Below is the example of Date setFullYear() method.

Example:

<script> 
   // Here a date has been assigned 
   // while creating Date object 
   var dateobj = 
   new Date('October 13, 1996 05:35:32'); 
  
   // New year 1992 is being set in above Date 
   // Object with the help of setFullYear() method 
   dateobj.setFullYear(1992); 
  
   // New year from above Date Object is 
   // being extracted using getFullYear() 
   var B = dateobj.getFullYear(); 
  
   // Printing new year 
   document.write(B); 
</script> 

Output:
```
1992
```

The date.setFullYear() method is used to set year into a date object which is created using Date() constructor.

Syntax:

DateObj.setFullYear(year_Value)

Parameter: This method accept a single parameter as mentioned above and described below:

year_Value: This parameter holds the value of year which is used to set in Date() constructor.

Return Value: It returns the new date with updated year which is set by setFullYear() method.

Note: The DateObj is a valid Date object created using Date() constructor in which we want to set the year.

More codes for the above method are as follows:

Program 1: If in Date() constructor we do not give any year, still setFullYear() method set new year which is given as its parameter.

<script> 
   // Here year has not been assigned 
   // while creating Date object 
   var dateobj =  
   new Date('October 13, 05:35:32'); 
  
   // new year 1992 is being set in above Date 
   // Object with the help of setFullYear() method 
   dateobj.setFullYear(1992); 
  
   // New year from above Date Object is 
   // being extracted using getFullYear() 
   var B = dateobj.getFullYear(); 
  
   // Printing new year 
   document.write(B); 
</script> 

Output:

Program 2: If nothing as parameter is given in Date() constructor, still setFullYear() method set year but month and date become current ones. Here in output 2 is the month of March because month name start from 0 to 11 i.e, 0 for January and 11 for December and 30 is the current date.

<script> 
   // Here nothing has been assigned 
   // while creating Date object 
   var dateobj = new Date(); 
  
   // new year 2007 is being set in above Date 
   // Object with the help of setFullYear() method 
   dateobj.setFullYear(2007); 
  
   // Year from above Date Object is 
   // being extracted using getFullYear() 
   var B = dateobj.getFullYear(); 
  
   // Month from above Date Object is 
   // being extracted using getMonth() 
   var C = dateobj.getMonth(); 
  
   // Date from above Date Object is 
   // being extracted using getDate() 
   var D = dateobj.getDate(); 
  
   // Printing new year 
   document.write(B + "<"<br />">"); 
  
   // Printing current month 
   document.write(C + "<"<br />">"); 
  
   // Printing current date 
   document.write(D); 
</script> 

Output:

2007
2
30

Supported Browsers: The browsers supported by JavaScript Date setFullYear() method are listed below:

Google Chrome
Internet Explorer
Mozilla Firefox
Opera
Safari

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