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super.js
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super.js
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class Rectangle {
constructor(height, width) {
this.name = 'Rectangle';
this.height = height;
this.width = width;
}
sayName() {
console.log('Hi, I am a', this.name + '.');
}
// saved as a variable in area
get area() {
return this.height * this.width;
}
set area(value) {
//final value = area
this._area = value;
}
}
class Square extends Rectangle {
constructor() {
// ReferenceError, super needs to be called first!
// this.height;
// Here, it calls the parent class's constructor with lengths
// provided for the Rectangle's width and height
length = 2
super(length, length);
// Note: In derived classes, super() must be called before you
// can use 'this'. Leaving this out will cause a reference error.
this.name = 'Square';
}
}
const square = new Square()
console.log(square);
console.log(square.name);
console.log(square.sayName());
console.log(square.area);