On Jan 10, 11:48 am, Fran <[email protected]> wrote:
> Hi there,
>
> I have a couple question:
>
> Why does "void(any_input)" return "undefined" ?
Because void is an operator that always returns undefined for any
valid input
> Why does "typeof void" throw an exception ?
Because void needs an argument. void is not a function in the normal
sense.
> What is "void" for or what use can I give to it ?
>
> I'm quite curious about this reserved word and I'd like to know more
> about it and if it has any interesting use.
To add another use case where void can be useful:
var myValue = doSomeTest ? someValue :
anotherTest ? anotherValue :
void 0; //otherwise I don't care, but I have
to put something here
//for it to be valid syntax and I
don't want a dummy value
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