Checks if test is nil (null or undefined).
test
isNil(undefined); //=> true isNil(null); //=> true isNil(''); //=> false isNil(5); //=> false
The value to check.
Returns true if test is nil, else false.
true
false
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Checks if
testis nil (null or undefined).isNil(undefined); //=> true isNil(null); //=> true isNil(''); //=> false isNil(5); //=> false