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JavaScript setTime() Method

Date Object Reference JavaScript Date Object

Definition and Usage

The setTime() method is used to calculate a date and time by adding or subtracting a specified number of milliseconds to/from midnight January 1, 1970.

Syntax

dateObject.setTime(millisec)

Parameter Description
millisec Required. A numeric value representing the milliseconds since midnight January 1, 1970. Can be a negative number

Tips and Notes

Note: This method is always used in conjunction with a Date object.

Examples

Example 1

Add 77771564221 milliseconds to 1970/01/01 and display the new date and time:

<script type="text/javascript">

var d=new Date();
d.setTime(77771564221);
document.write(d);

</script>

The output of the code above will be:

Mon Jun 19 05:12:44 UTC+0200 1972

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Example 2

Subtract 77771564221 milliseconds from 1970/01/01 and display the new date and time:

<script type="text/javascript">

var d=new Date();
d.setTime(-77771564221);
document.write(d);

</script>

The output of the code above will be:

Sat Jul 15 22:47:15 UTC+0200 1967

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Date Object Reference JavaScript Date Object

From http://www.w3schools.com (Copyright Refsnes Data)