Calling a static function in JavaScript?

Question

How would I call the static function calculator()?. I know a static function does not need an instance of the class to be called. However, trying the following wont work:

class TaxCalculator {
  static calculator(total) {
    return total * .05;
  }
}

new TaxCalculator().calculator(50);

Robby Cornelissen · Accepted Answer · 2021-03-25 09:36:39Z

1

You need to call the function in a static context, i.e. directly on the class itself, and not on an instance of the class:

class TaxCalculator {
  static calculator(total) {
    return total * .05;
  }
}


console.log(TaxCalculator.calculator(50));

answered Mar 25, 2021 at 9:36

Robby Cornelissen

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4 Comments

jessi Over a year ago

I understand what you are saying at it works but in the quiz i was doing i was given the following options. addTax(50) new TaxCalculator().calculator($50), new TaxCalculator().calculator(50);

jessi Over a year ago

also calculator(50)

Robby Cornelissen Over a year ago

None of those would work. You're sure it's not a Java question, right? Instead of JavaScript?

jessi Over a year ago

Its from the Linkedin Skills test. Its the only question I got wrong

DecPK · Accepted Answer · 2021-03-25 09:37:44Z

0

You can access static method directly with Class name.

class TaxCalculator {
  static calculator(total) {
    return total * .05;
  }
}

  console.log(TaxCalculator.calculator(10000));

answered Mar 25, 2021 at 9:37

DecPK

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