If subclass (child class) has the same method as declared in the parent class, it is known as method overriding. In other words, redefined the base class methods in the derived class or child class.
Rules for Method Overriding
* The method must have the same name as in the parent class
* The method must have the same parameter as in the parent class.
* There must be an IS-A relationship (inheritance).
Example :
class NewPrinter extends Printer {
doPrint(): any {
super.doPrint();
console.log("Called Child class.");
}
doInkJetPrint(): any {
console.log("Called doInkJetPrint().");
}
}
let printer: new () => NewPrinter;
printer.doPrint();
printer.doInkJetPrint();
