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62

Date vs new Date in JavaScript

rated 0 times [ 63] [ 1] / answers: 1 / hits: 26966 / 12 Years ago, tue, march 6, 2012, 12:00:00

new Date() takes an ordinal and returns a Date object.

What does Date() do, and how come it gives a different time?

>>> new Date(1329429600000)

Date {Fri Feb 17 2012 00:00:00 GMT+0200 (القدس Standard Time)}

>>> Date(1329429600000)

Tue Mar 06 2012 15:29:58 GMT+0200 (Jerusalem Standard Time)

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answered 12 Years ago jennifer · Accepted Answer

From the specs:

When Date is called as a function rather than as a constructor, it returns a String representing the current time (UTC).

and:

When Date is called as part of a new expression, it is a constructor: it initialises the newly created object.

So, new Date(...) returns an object such that obj instanceof Date is true, whereas Date(...) basically returns the same as new Date().toString().