JavaScript Set Date Methods
Set Date methods let you set date values (years,
months, days, hours, minutes, seconds, milliseconds) for a Date Object.
Set Date Methods
Set Date methods are used for setting a part of a date:
Method
Description
setDate()
Set the day as a number (1-31)
setFullYear()
Set the year (optionally month and day)
setHours()
Set the hour (0-23)
setMilliseconds()
Set the milliseconds (0-999)
setMinutes()
Set the minutes (0-59)
setMonth()
Set the month (0-11)
setSeconds()
Set the seconds (0-59)
setTime()
Set the time (milliseconds since January 1, 1970)
The setFullYear() Method
The setFullYear() method sets the year of a date object. In this example to 2020:
Example
const d = new Date();
d.setFullYear(2020);
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The setFullYear() method can optionally set month and day:
Example
const d = new Date();
d.setFullYear(2020, 11, 3);
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The setMonth() Method
The setMonth() method sets the month of a date object (0-11):
Example
const d = new Date();
d.setMonth(11);
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The setDate() Method
The setDate() method sets the day of a date object (1-31):
Example
const d = new Date();
d.setDate(15);
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The setDate() method can also be used to add days to a date:
Example
const d = new Date();
d.setDate(d.getDate() + 50);
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If adding days shifts the month or year, the changes are handled automatically by the Date object.
The setHours() Method
The setHours() method sets the hours of a date object (0-23):
Example
const d = new Date();
d.setHours(22);
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The setMinutes() Method
The setMinutes() method sets the minutes of a date object (0-59):
Example
const d = new Date();
d.setMinutes(30);
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The setSeconds() Method
The setSeconds() method sets the seconds of a date object (0-59):
Example
const d = new Date();
d.setSeconds(30);
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Compare Dates
Dates can easily be compared.
The following example compares today's date with January 14, 2100:
Example
let text = "";
const today = new Date();
const someday = new Date();
someday.setFullYear(2100, 0, 14);if (someday > today) { text = "Today is before January 14, 2100.";} else {
text = "Today is after January 14, 2100.";}
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JavaScript counts months from 0 to 11. January is 0. December is 11.
Complete JavaScript Date Reference
For a complete Date reference, go to our:
Complete JavaScript Date Reference.
The reference contains descriptions and examples of all Date properties and
methods.
Test Yourself With Exercises
Exercise:
Use the correct Date method to set the year of a date object to 2020.
const d = new Date();
d.;
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Start the Exercise
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Reference: https://www.w3schools.com/js/js_date_methods_set.asp