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

Sougata Ghosh
Sougata Ghosh
6,096 Points

StringGPA method

How do i do this ? Help with the correct code pls.

adding_methods.js
class Student {
    constructor(gpa){
        this.gpa = gpa;
    }
  stringGPA(gpa) {
    return toString(gpa);
  };
}

const student = new Student(3.9);

1 Answer

Eric M
Eric M
11,507 Points

Hi Sougata,

The instructions could be clearer on what you need to do here. What this challenge actually wants is for the stringGPA method to take no arguments and return a conversion of the class property gpa that was set during instantiation.

A note on class methods though, they don't end with a semicolon, just the curly brace.

Seperately to that, there's no independant toString() function in JavaScript, you need to use the method of the object type that you want to convert to a string. In this case, as GPA is a number, you need to use the toString() method on the number. It's always a good idea to check the MDN reference when you're working with functions you don't use everyday. I use the MDN reference regularly when working with JavaScript.

Okay, so, with those new bits of information, we can rewrite your stringGPA method as:

stringGPA()
{
        return this.gpa.toString();
}

Cheers,

Eric