Is null a type or value?
null isn’t a type. From msdn: The null keyword is a literal that represents a null reference, one that does not refer to any object.
What is type of null?
Type: Null (Japanese: タイプ：ヌル Type: Null) is a Normal-type Legendary Pokémon introduced in Generation VII.
What is null in JS?
isNull() function: It is used to find whether the value of the object is null. If object has null value then the output will be true otherwise false. We can even perform addition, subtraction etc operations in this function.
undefined is a property of the global object. That is, it is a variable in global scope. … A variable that has not been assigned a value is of type undefined . A method or statement also returns undefined if the variable that is being evaluated does not have an assigned value.
Is null an object Java?
No it’s not, and for those who wonder why such a question, there are languages where null is indeed an object like any, for example Ruby. In Scala, which is very meticulous about types, there is a type Null (a trait, actually) having a single instance null .
The function in question is called empty() . Similar to the PHP function of the same name, it takes a variable or property and tells you if the value is empty. The definition of empty depends on the value in question. PHP’s empty() function is annoyingly loose.