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Date.now Function (JavaScript)

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Returns the number of milliseconds between January 1, 1970, and the current date and time.

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Date.now()

Return Value

The number of milliseconds between midnight, January 1, 1970, and the current date and time.

Remarks

The getTime method returns the number of milliseconds between January 1, 1970, and a specified date.

For information about how to calculate elapsed time and compare dates, see Date and Time Calculations (JavaScript).

Example

The following example illustrates the use of the now method.

JavaScript

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var startMSec = Date.now();
var response = prompt("What is your name?", "");
var endMSec = Date.now();
    
var elapsed = (endMSec - startMSec) / 1000;
document.write("You took " + elapsed + " seconds" + " to type: " + response);

Requirements

Supported in the following document modes: Quirks, Internet Explorer 6 standards, Internet Explorer 7 standards, Internet Explorer 8 standards, Internet Explorer 9 standards, Internet Explorer 10 standards. Also supported in Metro style apps. See Version Information.

Reference

getTime Method (JavaScript)

Date Object (JavaScript)

JavaScript Methods

Concepts

Date and Time Calculations (JavaScript)

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