How to get a timestamp in JavaScript

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When working with dates and times it's often useful to be able to represent your point in time as a single number. A good example of this in practice is Unix Timestamps, where it is represented as the number of seconds that have passed since the Unix epoch; 00:00:00 UTC on 1 January 1970.

In JavaScript we can achieve something similar by leveraging the native Date object. By using we can get the UTC timestamp in milliseconds.


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It's also possible to use this short hand that uses a unary operator to trigger the valueOf method on our Date object.

console.log(+new Date());

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If you wanted to then convert these to seconds to match the Unix Epoch Time you would just do this:

Math.floor( / 1000);

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