Question

56

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

rated 0 times [ 59] [ 3] / answers: 1 / hits: 78856 / 9 Years ago, thu, august 13, 2015, 12:00:00

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

class Polygon {

  constructor(height, width) {

    this.height = height;

    this.width = width;

  }



  get area() {

    return this.calcArea()

  }



  calcArea() {

    return this.height * this.width;

  }

}

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bradenc

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2 Years ago

answered 9 Years ago jabari · Accepted Answer

It means the function is a getter for a property.

To use it, just use it's name as you would any other property:

'use strict'

class Polygon {

  constructor(height, width) {

    this.height = height;

    this.width = width;

  }



  get area() {

    return this.calcArea()

  }



  calcArea() {

    return this.height * this.width;

  }

}



var p = new Polygon(10, 20);



alert(p.area);