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JavaScript Object-Oriented JavaScript Working with Classes in JavaScript Adding methods to classes

Chanel Weathers
Chanel Weathers
7,003 Points

Converting to a string

I'm not sure what is being asked in this video.. how would i convert the stringGPA method to a string and return it?

adding_methods.js
class Student {
    constructor(gpa, stringGPA){
        this.gpa = gpa;
        this.stringGPA = stringGPA;
    }
  stringGPA() {
    string(this.stringGPA);
  }
}

const student = new Student(3.9);

1 Answer

Hey Chanel, So you start out the problem like this,

class Student {
    constructor(gpa){
        this.gpa = gpa;
    }
}

const student = new Student(3.9);
  • They ask you to make a method so no need to create 'this.stringGPA' in line 4. The method will be outside the constructor function but inside the class like so.
class Student {
    constructor(gpa){
        this.gpa = gpa;
    }
    stringGPA() {
    }
}
const student = new Student(3.9);
  • You were close on your method but you used 'string' in string(this.gpa) should be capitalized (String) and what you are converting to a string is the gpa value which is a number at the beginning. Should look like this.
class Student {
    constructor(gpa){
        this.gpa = gpa;
    }
  stringGPA() {
    return this.gpa.toString();   //or String(this.gpa) either works
  }
}
const student = new Student(3.9);

Hope that helps.