create setter

Question

Maximum call stack size exceeded.. I don't get it..
```creating_setters.js
class Student {
    constructor(gpa, credits){
        this.gpa = gpa;
        this.credits = credits;
    }
stringGPA() {
    return this.gpa.toString();
}

get level() {
    if (this.credits > 90 ) {
        return 'Senior';
    } else if (this.credits > 60) {
        return 'Junior';
    } else if (this.credits > 30) {
        return 'Sophomore';
    } else {
        return 'Freshman';
    }
}
  set major(major){ 
    var student = new Student(3.9, 60);
    if (student >= 60 && student <= 90) {
        this.major = 'major';
    } else {
      this.major = 'None';
    }    
  }
}
var student = new Student(3.9, 60);
```

Matthew Lang · Accepted Answer

Read the question carefully. A 'backing' property is generally a property that is never accessed directly, but by getters and setters. Backing properties usually start with an _ (underscore) at the beginning of their name, as so to differ them from the getter and setter method names.
The correct code is as follows:
js
set major(major) {
  if(this.level == "Junior" || this.level == "Senior") {
    this._major = major;
  } else {
    this._major = "None";
  }
}

We create a setter method, by using the set keyword. We pass in 'major' as our argument, which will store the type of major. We then check to see if the current level of the user is Junior or Senior, as this is what the question asks us to do. Here we use the level getter method to calculate and return the value. If the user is Junior or Senior, we set the backing property _major to be equal to the major argument. If they are neither, we then set it as 'None', which the question asks us to do.
If you're still struggling with getters and setters, I suggest re-watching some previous videos for revision. Don't worry, these are difficult concepts to wrap your head around first time around. You can also check the documentation on getters (https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Functions/get) and setters (https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Functions/set).

Reagan Ganancial · Answer

Good luck in your studies and after my javascript fullstack course i'll eventually go for database sql and ReactJS framework. Thank you very much!

Reagan Ganancial · Answer

Great for you! I'm taking treehouse course for fulltime and i'm a college dropout. I've seen your profile and your taking treehouse for almost one year. I'am in my fourth month and I'am asking my self, if i'am placing myself in huge risk after this course of being still unemployed. Do you think being in treehouse courses really prepare us in real job situation.

Welcome to the Treehouse Community

Looking to learn something new?

Reagan Ganancial

Reagan Ganancial

create setter

3 Answers

Matthew Lang

Matthew Lang

Reagan Ganancial

Reagan Ganancial

Matthew Lang

Matthew Lang

Reagan Ganancial

Reagan Ganancial

Reagan Ganancial

Reagan Ganancial

Matthew Lang

Matthew Lang