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What is class?

A class is a template which hold a lot of objects and methods .

  • class is a blueprint or template or set of instructions

What is abstract class

Abstract classes are classes that contain one or more abstract methods .only extends this.

  • at least one abstract method

What diffrent this and super keyword

this super
this represent current instance of class (containing class) super represent current instance of parent class.
access data from own class access data from parent / inherit class

What diffrent public, private, and protected

type Class (own) Package Subclass (same-pkg) Subclass (diff pkg) World
node.js, js, typescript, ts