2618. Check if Object Instance of Class

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2618. Check if Object Instance of Class

Write a function that checks if a given object is an instance of a given class or superclass.

There are no constraints on the data types that can be passed to the function.

Examples

Example 1:

Input: func = () => checkIfInstance(new Date(), Date)
Output: true
Explanation: The object returned by the Date constructor is, by definition, an instance of Date.

Example 2:

Input: func = () => { class Animal {}; class Dog extends Animal {}; return checkIfInstance(new Dog(), Animal); }
Output: true
Explanation:
class Animal {};
class Dog extends Animal {};
checkIfInstance(new Dog(), Animal); // true

Dog is a subclass of Animal. Therefore, a Dog object is an instance of both Dog and Animal.

Example 3:

Input: func = () => checkIfInstance(Date, Date)
Output: false
Explanation:
A date constructor cannot logically be an instance of itself.

Example 4:

Input: func = () => checkIfInstance(5, Number)
Output: true
Explanation:
5 is a Number. Note that the "instanceof" keyword would return false.