javascript class inheritance
// Class Inheritance in JavaScript
class Mammal {
constructor(name) {
this.name = name;
}
eats() {
return `${this.name} eats Food`;
}
}
class Dog extends Mammal {
constructor(name, owner) {
super(name);
this.owner = owner;
}
eats() {
return `${this.name} eats Chicken`;
}
}
let myDog = new Dog("Spot", "John");
console.log(myDog.eats()); // Spot eats chickensetting property to method in child class javascript
// setting a new property in child class that extends parent or whatever
//PARENT CLASS
class Person{
constructor(name,place){
this.name = name; //property
this.place = place; //property
}
Full(){ //method
console.log(`I am ${this.name} from ${this.place}`);
}
};
//CHILD CLASS EXTENDING PARENT
class Student extends Person{
constructor(name,place,age){
super(name,place);
this.age = age; // always call super before accessing ("this")
}
Detail(){ //method
this.area = "Adayar"; //NEW PROPERTY IN our CHILD METHOD
console.log(`I'm ${this.name} from ${this.place}, area ${this.area} & I'm ${this.age} years old`);
}
Detailed(){ //method
console.log(`${this.area}`); // it can still access in other method inside it's own child class
}
};
var student1 = new Student("Surya", "Chenai", 25);
student1;
student1.Full();
student1.Detail();
student1.Detailed();Copyright © 2021 Codeinu
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