What is typeof in JS?

typeof is a JavaScript keyword that will return the type of a variable when you call it . You can use this to validate function parameters or check if variables are defined. There are other uses as well. The typeof operator is useful because it is an easy way to check the type of a variable in your code.

The getClass() method of Writer Class in Java is used to get the parent Class of this Writer instance . This method does not accepts any parameter and returns the required Class details. Syntax: public final Class String getClass()

The java “instanceof” operator is used to test whether the object is an instance of the specified type (class or subclass or interface) . It is also known as type comparison operator because it compares the instance with type. It returns either true or false.

Use getClass(). getSimpleName() to Check the Type of a Variable in Java. We can check the type of a variable in Java by calling getClass(). getSimpleName() method via the variable.

Java provides three different ways to find the type of an object at runtime like instanceof keyword, getClass(), and isInstance() method of java. lang. Class .

The JavaScript typeof operator is used to return a string that represents the type of JavaScript for a given value . It returns the data type of the operand in the form of a string. The operand can be a literal or a data structure like a function, an object, or a variable.

Java does not have typeof operator but there’s the instanceof operator to check the types.8 Nis 2020