JavaScript In Practice: ES6 And Beyond/

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Getters and Setters

Getters and Setters

introduction to getters and setters, and their advantages

We'll cover the following...

Getters and setters are used to create computed properties.

Node.js
class Square {
    constructor( width ) { this.width = width; }
    get area() { 
        console.log('get area');
        return this.width * this.width;
    }    
}
let square = new Square( 5 );
console.log(square.area)

Note that area only has a getter. Setting area does not change anything, as area is a computed property that depends on the width of the square.

For the sake of demonstrating ...