How do you get a timestamp in JavaScript?

Question

How can I get a timestamp in JavaScript?

Something similar to Unix timestamp, that is, a single number that represents the current time and date. Either as a number

Answer 1

The Date.getTime() method can be used with a little tweak:

The value returned by the getTime method is the number of milliseconds since 1 January 1970 00:00:00 UTC.

Divide the result by 1000 to get the Unix timestamp, floor if necessary:

(new Date).getTime() / 1000

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^{The Date.valueOf() method is functionally equivalent to Date.getTime(), which makes it possible to use arithmetic operators on date object to achieve identical results. In my opinion, this approach affects readability.}