Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

JavaScript Practice Getters and Setters in JavaScript Practicing Getters and Setters Practice Creating and Calling a Setter Method

Posted by Jan Oberreiter
Jan Oberreiter
78,020 Points

still cannot solve the second question?

I figured the first out (after I cheated and looked it up), but from there, I cannot solve the second one ....

Circle.js 
class Circle {  

    set radius(radius){
        this._radius = radius;
        this.area = 3.14 * Math.pow(radius, 2);
        this.circumference = 2*(3.14)*radius;
  }

}

const circ = new Circle();

4 Answers

Steven Parker
Steven Parker
231,269 Points
Steven Parker
Steven Parker
231,269 Points

Task 2 is easier than task 1, since there's no calculations this time.

Here's a hint: The setter stored the radius, the getter will just return the value that you stored.

Jan Oberreiter
Jan Oberreiter
78,020 Points
Jan Oberreiter
Jan Oberreiter
78,020 Points

Thank you for your answer, it is still getting me mad, I just don't get it, I am thinking of starting JS all over again like in the middle ... thank you very much .... regards, an.

Steven Parker
Steven Parker
231,269 Points
Steven Parker
Steven Parker
231,269 Points

So were you able to solve it with the hint? If not, please show the code you tried.

Jan Oberreiter
Jan Oberreiter
78,020 Points
Jan Oberreiter
Jan Oberreiter
78,020 Points

Hello Steve, I finally managed it, but I habüve to admit, I just tried around till I had it, but I still don't understand it, my code: 

class Circle {  

    set radius(radius){
        this._radius = radius;
        this.area = 3.14 * Math.pow(radius, 2);
        this.circumference = 2*(3.14)*radius;
  }
        get radius() {
    return this._radius;
    }
}

const circ = new Circle();   

```javascript
Steven Parker
Steven Parker
231,269 Points
Steven Parker
Steven Parker
231,269 Points

You did get it exactly right! Your "get" method returns the value that was set in the backing field by the setter.
Good job. :+1:

Jan Oberreiter
Jan Oberreiter
78,020 Points
Jan Oberreiter
Jan Oberreiter
78,020 Points

I will start JS over again, not at the very beginning, but maybe at 4000 Points, because of this ... what's the point in having so many points, but I still you don' get too much, so I rather refresh the things ... thank you Steven ...