Return void(0); vs return; interrupting functions

Question

I ran across some code that interrupts a function return void(0);.

I believe that is being used to return undefined but that can be done simply by writing return;.

Does return void(0); serve an additional purpose, or is this just two different ways to interrupt a function?

not a duplicate for I already understand the meaning of `void(0);` and that it returns `undefined`. — Chris Bier, Apr 19 '13 at 23:01
Well, if you understand that `void(0)` evaluates to `undefined` what are you asking? — Jon, Apr 19 '13 at 23:02
@JonathanLonowski: The answer in the disputed dupe has a link to the MDN docs that explain exactly how that works. — Jon, Apr 19 '13 at 23:05
@Jon his question is almost litteraly: Does it serve an *additional purpose* ? — Stephane Rolland, Apr 19 '13 at 23:23

score 7 · Accepted Answer · answered Apr 19 '13 at 23:06

7

return void(0); doesn't do anything special. It simply returns undefined, albeit in a very silly way. It's probably a case of the original developer not understanding JavaScript fully.

answered Apr 19 '13 at 23:06

zzzzBov

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More probably a case of OLD coding style. – Sebastian Norr Aug 19 '19 at 10:19

score 4 · Answer 2 · answered Apr 19 '13 at 23:01

4

It's just another way to return undefined. See https://developer.mozilla.org/en-US/docs/JavaScript/Reference/Operators/void

answered Apr 19 '13 at 23:01

Barmar

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Return void(0); vs return; interrupting functions

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