How to Solve Check if Object Instance of Class Problem
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Check if Object Instance of Class
Write a function that checks if a given value is an instance of a given class or superclass. For this problem, an object is considered an instance of a given class if that object has access to that cl...
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Understanding the Check if Object Instance of Class Problem
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Problem Statement
Write a function that checks if a given value is an instance of a given class or superclass. For this problem, an object is considered an instance of a given class if that object has access to that class's methods. There are no constraints on the data types that can be passed to the function. For example, the value or the class could be undefined.
Check if Object Instance of Class
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Examples
func = () => checkIfInstanceOf(new Date(), Date)trueThe object returned by the Date constructor is, by definition, an instance of Date.
func = () => { class Animal {}; class Dog extends Animal {}; return checkIfInstanceOf(new Dog(), Animal); }trueclass Animal {}; class Dog extends Animal {}; checkIfInstanceOf(new Dog(), Animal); // true Dog is a subclass of Animal. Therefore, a Dog object is an instance of both Dog and Animal.
func = () => checkIfInstanceOf(Date, Date)falseA date constructor cannot logically be an instance of itself.
func = () => checkIfInstanceOf(5, Number)true5 is a Number. Note that the "instanceof" keyword would return false. However, it is still considered an instance of Number because it accesses the Number methods. For example "toFixed()".
Constraints
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