logic problem when instantiating Javascript class

Question

logic problem when instantiating Javascript class

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#1 by (3 votes)

2

I'm starting with Javascript and POO , but when creating this class and writing the command to print in console, it only shows me the content of the object:

(ƒ operacion(){
    return this.n1+this.n2;
})

What prevents me from receiving the numbers I enter the constructor and prints the result? Thank you! : D Code;

class sumatoria{
    numero (n1,n2){
        this.n1=n1;
        this.n2=n2;
    }

    get resultado(){
        return this.operacion
    }

    operacion(){
        return this.n1+this.n2;
    }
}

var suma= new sumatoria(2+2);
console.log(suma.resultado);

javascript

asked by Ketchup786 21.09.2018 в 20:55

source

1 answer

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score 3 · Accepted Answer

I made some changes:

A class must have a constructor.

console.log(suma.resultado()); instead of console.log(suma.resultado); since the result is a method.

class sumatoria{
    constructor (n1,n2){
        this.n1=n1;
        this.n2=n2;
    }

    get resultado(){
        return this.operacion
    }

    operacion(){
        return this.n1+this.n2;
    }
}

var suma= new sumatoria(2,2);
console.log(suma.resultado());