JavaScript | date.setMilliseconds() function

The date.setMilliseconds() is an inbuilt function in JavaScript which is used to set milliseconds into a date object which are created using date() constructor.
Syntax:

dateObj.setMilliseconds(milliseconds_Value);

DateObj is a valid Date object created using Date() constructor in which we want to set the millisecond. Value of millisecond is from 0 to 999.
Parameter: Here parameter is milliseconds_Value i.e, the value of millisecond which is used to set in date() constructor.
Return Values: It returns the new i.e updated millisecond which is set by setMilliseconds() function.

// Here a date has been assigned 
// while creating Date object 
var dateobj = new Date('October 13, 1996 05:35:32:77'); 
  
// new millisecond of 52 is being set in above Date 
// Object with the help of setMilliseconds() function 
dateobj.setMilliseconds(52); 
  
// new millisecond from above Date Object is 
// being extracted using getMilliseconds() 
var B = dateobj.getMilliseconds(); 
  
// Printing new millisecond 
console.log(B); 

Output:

> 52

Errors and Exceptions

Code #1: If in Date() constructor we do not give any millisecond, still setMilliseconds() function set new millisecond which is given as its parameter.

// Here millisecond has not been assigned 
// while creating Date object 
var dateobj = new Date('October 13, 1996'); 
  
// new millisecond of 51 is being set in above Date 
// Object with the help of setMilliseconds() function 
dateobj.setMilliseconds(51); 
  
// new millisecond from above Date Object is 
// being extracted using getMilliseconds() 
var B = dateobj.getMilliseconds(); 
  
// Printing new millisecond 
console.log(B); 

Output:

> 51

Code #2: If nothing as parameter is given in Date() constructor, still setMilliseconds() function set millisecond but month, year, date etc become current ones.

// Here nothing has been assigned 
// while creating Date object 
var dateobj = new Date(); 
  
// new millisecond of 42 is being set in above Date 
// Object with the help of setMilliseconds() function 
dateobj.setMilliseconds(42); 
  
// milliseconds from above Date Object is 
// being extracted using getMilliseconds() 
var B = dateobj.getMilliseconds(); 
  
// 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(); 
  
// year from above Date Object is 
// being extracted using getFullYear() 
var E = dateobj.getFullYear(); 
  
// Printing new milliseconds 
console.log(B); 
  
// Printing current month 
console.log(C); 
  
// Printing current date 
console.log(D); 
  
// Printing current year 
console.log(E); 

Output:

> 42
> 4
> 1
> 2018

Here 42 is the new milliseconds, 4 is the current month i.e April, 1 is the current date and 2018 is the current year.

Code #3: If value of millisecond 1006 is given as the parameter of setMilliseconds() function, It will set 6 as the millisecond because millisecond range is form 0 to 999 and hence $1006-1000=6$ , here 1000 is substracted because 0 to 999 is 1000.

// Here date has been assigned 
// while creating Date object 
var dateobj = new Date('October 13, 1996 05:35:32:45'); 
  
// new millisecond of 1006 is being set in above Date 
// Object with the help of setMilliseconds() function 
dateobj.setMilliseconds(1006); 
  
// milliseconds from above Date Object is 
// being extracted using getMilliseconds() 
var B = dateobj.getMilliseconds(); 
  
// Second from above Date Object is 
// being extracted using getSeconds() 
var C = dateobj.getSeconds(); 
  
// Printing new Milliseconds 
console.log(B); 
  
// Printing second 
console.log(C); 

Output:

> 6
> 33

Here 6 is the new millisecond and second becomes 33 from 32 because millisecond range is form 0 to 999 i.e, total 1000 and we set new millisecond as 1006 which increase second by one to 33 from 32 and millisecond becomes 6.

My Personal Notes

Jul	AUG	Sep
	19
2018	2019	2020

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