The date.setFullYear() is an inbuilt function in JavaScript which is used to set year into a date object which is created using Date() constructor.
Syntax:
DateObj.setFullYear(year_Value)
DateObj is a valid Date object created using Date() constructor in which we want to set the year.
Parameter: Here parameter year_Value is 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() function.
Below program illustrates the setFullYear() function:
// 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() function dateobj.setFullYear(1992); // new year from above Date Object is // being extracted using getFullYear() var B = dateobj.getFullYear(); // Printing new year console.log(B); |
Output:
1992
Errors and Exceptions
- Code #1: If in Date() constructor we do not give any year, still setFullYear() function set new year which is given as its parameter.
// 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() function
dateobj.setFullYear(1992);
// new year from above Date Object is
// being extracted using getFullYear()
var
B = dateobj.getFullYear();
// Printing new year
console.log(B);
Output:
1992
- Code #2: If nothing as parameter is given in Date() constructor, still setFullYear() function set year but month and date become current ones.
// 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() function
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
console.log(B);
// Printing current month
console.log(C);
// Printing current date
console.log(D);
Output:
2007 2 30
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.
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