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JavaScript Object-Oriented JavaScript Getters and Setters Creating Setter Methods

Posted by Zak Mosbacher
.a{fill-rule:evenodd;}techdegree seal-36
Zak Mosbacher
Full Stack JavaScript Techdegree Graduate 16,080 Points

Cannot set property level of #<Student> which has only a getter

Hey, I dont understand why this setter is not correct, thanks for the help. :)

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){
        if(this.level = 'Senior' || 'Junior'){
        this._major = major;
      }else if(Student.level = 'Sophomore' || 'Freshman'){
        this._major = 'None';
      }
    }
}

var student = new Student(3.9, 60);

1 Answer

Steven Parker
Steven Parker
230,995 Points
Steven Parker
Steven Parker
230,995 Points

First, remember that the equality comparison operator is "==" and just a single "=" is an assignment operator.

Then, logical combining only works with complete comparison expressions, for example:

if (count == 3 || 4)           // this test will always be "true"
if (count == 3 || count == 4)  // but this one is true only when count is either 3 or 4

And you probably didn't intend to refer to the class itself by name ("Student") instead of referring to the instance ("this").

Zak Mosbacher
.a{fill-rule:evenodd;}techdegree seal-36
Zak Mosbacher
Full Stack JavaScript Techdegree Graduate 16,080 Points

Thanks!