Contenido del Curso
Object-Oriented Programming in JavaScript
Object-Oriented Programming in JavaScript
What is an Inheritance
Inheritance is another main OOP principle, which means that some classes can adopt properties of other classes, and maybe extend them.
Like, for example, we have class Rectangle
which represents the rectangle instance. Then, let’s define class Square
. Square is a Rectangle, too, so we can create this class from the Rectangle
class. Use keyword extends
:
class Rectangle { height; width; constructor(height, width) { this.height = height; this.width = width; console.log('Rectangle created'); } } class Square extends Rectangle{ }
Now Square
has the same attributes and methods as Rectangle
class.
The Rectangle
is a base class, and Square
is a derived class. Or you can say that Rectangle
is a parent class and Square
is a daughter class.
Square
differs with sides length: height is equal to the width, unlike for Rectangle
.
Usually, JavaScript classes such as an array
, console
, window
, etc. inherit some base classes, which can inherit other classes. It is very advisable to extend existing classes, not to define similar classes again.
Tarea
Create Fruit
and Apple
class, such that Apple is a daughter class for Fruit class. Let these classes be empty for now.
¡Gracias por tus comentarios!
What is an Inheritance
Inheritance is another main OOP principle, which means that some classes can adopt properties of other classes, and maybe extend them.
Like, for example, we have class Rectangle
which represents the rectangle instance. Then, let’s define class Square
. Square is a Rectangle, too, so we can create this class from the Rectangle
class. Use keyword extends
:
class Rectangle { height; width; constructor(height, width) { this.height = height; this.width = width; console.log('Rectangle created'); } } class Square extends Rectangle{ }
Now Square
has the same attributes and methods as Rectangle
class.
The Rectangle
is a base class, and Square
is a derived class. Or you can say that Rectangle
is a parent class and Square
is a daughter class.
Square
differs with sides length: height is equal to the width, unlike for Rectangle
.
Usually, JavaScript classes such as an array
, console
, window
, etc. inherit some base classes, which can inherit other classes. It is very advisable to extend existing classes, not to define similar classes again.
Tarea
Create Fruit
and Apple
class, such that Apple is a daughter class for Fruit class. Let these classes be empty for now.
¡Gracias por tus comentarios!
What is an Inheritance
Inheritance is another main OOP principle, which means that some classes can adopt properties of other classes, and maybe extend them.
Like, for example, we have class Rectangle
which represents the rectangle instance. Then, let’s define class Square
. Square is a Rectangle, too, so we can create this class from the Rectangle
class. Use keyword extends
:
class Rectangle { height; width; constructor(height, width) { this.height = height; this.width = width; console.log('Rectangle created'); } } class Square extends Rectangle{ }
Now Square
has the same attributes and methods as Rectangle
class.
The Rectangle
is a base class, and Square
is a derived class. Or you can say that Rectangle
is a parent class and Square
is a daughter class.
Square
differs with sides length: height is equal to the width, unlike for Rectangle
.
Usually, JavaScript classes such as an array
, console
, window
, etc. inherit some base classes, which can inherit other classes. It is very advisable to extend existing classes, not to define similar classes again.
Tarea
Create Fruit
and Apple
class, such that Apple is a daughter class for Fruit class. Let these classes be empty for now.
¡Gracias por tus comentarios!
Inheritance is another main OOP principle, which means that some classes can adopt properties of other classes, and maybe extend them.
Like, for example, we have class Rectangle
which represents the rectangle instance. Then, let’s define class Square
. Square is a Rectangle, too, so we can create this class from the Rectangle
class. Use keyword extends
:
class Rectangle { height; width; constructor(height, width) { this.height = height; this.width = width; console.log('Rectangle created'); } } class Square extends Rectangle{ }
Now Square
has the same attributes and methods as Rectangle
class.
The Rectangle
is a base class, and Square
is a derived class. Or you can say that Rectangle
is a parent class and Square
is a daughter class.
Square
differs with sides length: height is equal to the width, unlike for Rectangle
.
Usually, JavaScript classes such as an array
, console
, window
, etc. inherit some base classes, which can inherit other classes. It is very advisable to extend existing classes, not to define similar classes again.
Tarea
Create Fruit
and Apple
class, such that Apple is a daughter class for Fruit class. Let these classes be empty for now.