Why we multiply seconds with 1000 in Javascript to add time

Question

I am working on cookies and I found some questions on Stack Overflow which have been answered. I see in the questions that the answers multiplied seconds by 1000. I want know what format getTime() returns, that would require multiplying by 1000.

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Because JavaScript works with time in milliseconds, not seconds. — David Thomas, Oct 14 '13 at 15:18

Lix · Accepted Answer · 2013-10-14T15:25:02.827

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JavaScript uses milliseconds to represent epoch time.

Epoch time is the number of seconds since 01/01/1970 and there are 1000 milliseconds in one second. So to get the number of milliseconds since 01/01/1970 you just multiply the value by 1000.

Reference -

MDN - Date

edited Oct 14 '13 at 15:25

answered Oct 14 '13 at 15:19

Lix

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Since, of course, the world was created in whole in the last second of 1969. – Lee Meador Oct 14 '13 at 15:22
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Well it had to start *somewhere*! ;) – Lix Oct 14 '13 at 15:23
well answered. Thanks – Jitender Oct 14 '13 at 15:24

Tyler · Answer 2 · 2013-10-14T19:08:12.647

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Because it's given to you in milliseconds.

Seconds * 1000 = Milliseconds

edited Oct 14 '13 at 19:08

answered Oct 14 '13 at 15:18

Tyler

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Seconds * 1000 = Milliseconds – Bill the Lizard Oct 14 '13 at 15:20

score 2 · Answer 3 · answered Oct 14 '13 at 15:19

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getTime

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

answered Oct 14 '13 at 15:19

r043v

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score 1 · Answer 4 · answered Oct 14 '13 at 15:19

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It's using milliseconds. That's why we need to multiply the seconds with 1000 to get an equivalent value.

answered Oct 14 '13 at 15:19

opalenzuela

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Why we multiply seconds with 1000 in Javascript to add time

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