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Can we declare below statement in js? This question was asked in interview.
Var undefined ;
6 Antworten
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A variable can be accessed before it's declaration. This concept is called variable hoisting
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Could you please explain me the use of variable hoisting?
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Well kid, as a matter of fact, I can. But you can do so yourself. Visit Mozilla Development Network, or just Google it.
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Thanks bro.
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my pleasure
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We can not declare any variable as undefined; example:
var undefined=20;
document.write(undefined);
The output printed will be undefined but not 20; It means the variable declaration is not happening.