What is the “get” keyword before a function in a class?

Question

What does get mean in this ES6 class? How do I reference this function? How should I use it?

class Polygon {
  constructor(height, width) {
           


        

Answer 1

Summary:

The get keyword will bind an object property to a function. When this property is looked up now the getter function is called. The return value of the getter function then determines which property is returned.

Example:

const person = {
    firstName: 'Willem',
    lastName: 'Veen',
    get fullName() {
        return `${this.firstName} ${this.lastName}`;
    }

}

console.log(person.fullName);
// When the fullname property gets looked up
// the getter function gets executed and its
// returned value will be the value of fullname