What is Superjs?

The super keyword in JavaScript acts as a reference variable to the parent class . It is mainly used when we want to access a variable, method, or constructor in the base class from the derived class.

The super keyword can be used in expressions to reference base class properties and the base class constructor . Super calls consist of the keyword super followed by an argument list enclosed in parentheses. Super calls are only permitted in constructors of derived classes.

Difference Between this() and super() Constructor The this() constructor refers to the current class object. The super() constructor refers immediate parent class object. It is used for invoking the current class method.

In Java, the superclass constructor can be called from the first line of a subclass constructor by using the special keyword super() and passing appropriate parameters, for example super(); or super(theName); as in the code below.

In Java, the superclass constructor can be called from the first line of a subclass constructor by using the special keyword super() and passing appropriate parameters, for example super(); or super(theName); as in the code below.