It is said that null, in JavaScript, is a primary type. However, when I use the operator typeof on null, it returns "Object".
What is the underlying procedure that made typeof to return "Object" instead of "Primitive" or "null"?
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1 Answer
Type of null is object.
you can check type of any variable with typeof keyword. for example
typeof null check the link below for more details.
8 Comments
Dat V.
if null is an object, why can't I add a property to it?
Abdul Qayyum
because By definition neither the null value nor the undefined value have any properties, nor can any properties be added to them.
Abdul Qayyum
have a look to stackoverflow.com/questions/14346237/…
Abdul Qayyum
@DatV. you need to accept the answer if I helped.
Ben Aston
According to the spec, this is incorrect.
null is an instance of the type "Null". The unexpected typeof null value was chosen for enhanced compatibility with Java. |