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JavaScript Date getTime() Method

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JavaScript Date getTime() Method is used to return the number of milliseconds since 1 January 1970. When a new Date object is created it stores the date and time data when it is created. The getTime() always uses UTC for time representation.

Syntax:

Date.getTime();

Parameters:

This method does not accept any parameter.

Return type:

A numeric value equal to no of milliseconds since Unix Epoch.

Example 1: In this example, the Date.getTime() method.

Javascript

// Here a date has been assigned
// While creating Date object
let A = new Date('October 15, 1996 05:35:32');
 
// Hour from above is being
// extracted using getTime()
let B = A.getTime();
 
// Printing time in milliseconds.
console.log(B);

                    

Output
845357732000

Example 2: Here, the date of the month must lie between 1 to 31 because no date can have a month greater than 31. That is why it returns NaN i.e, Not a Number if the month in the Date object is greater than 31. Hours will not have existed when the date of the month is given as 33 i.e, greater than 31.

Javascript

// Creating a Date object
let A = new Date('October 35, 1996 12:35:32');
let B = A.getTime();
 
// Printing hour.
console.log(B);

                    

Output
NaN

Example 3: Here, we will calculate the user’s age by providing the birth date of the user as BD.

Javascript

let BD = new Date("July 29, 1997 23:15:20");
let Today = new Date();
let today = Today.getTime();
let bd = BD.getTime();
let year = 1000 * 60 * 60 * 24 * 365;
let years = (today - bd) / year;
console.log(Math.round(years));

                    

Output
26

Supported Browsers:

  • Google Chrome 1.0
  • Microsoft Edge 12.0
  • Firefox 1.0
  • Internet Explorer 4.0
  • Opera 3.0
  • Safari 1.0

We have a complete list of Javascript Date Objects, to check those please go through this Javascript Date Object Complete reference article.



Last Updated : 15 Dec, 2023
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