JavaScript getTime() Method
 Complete Date Object Reference
Definition and Usage
The getTime() method returns the number of milliseconds since midnight of January 1, 1970.
Syntax
Tips and Notes
Note: This method is always used in conjunction with a Date object.
Example
In this example we will get how many milliseconds since 1970/01/01 and print it:
<script type="text/javascript">
var d = new Date();
document.write(d.getTime() + " milliseconds since 1970/01/01");
</script>
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The output of the code above will be:
Example 2
In the following example we will calculate the number of years since 1970/01/01:
<script type="text/javascript">
var minutes = 1000*60;
var hours = minutes*60;
var days = hours*24;
var years = days*365;
var d = new Date();
var t = d.getTime();
var y = t/years;
document.write("It's been: " + y + " years since 1970/01/01!");
</script>
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The output of the code above will be:
Try-It-Yourself Demos
getTime()
Use getTime() to calculate the years since 1970.
Complete Date Object Reference
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