uncaught reference error while using setter method in Javascript

Question

let person = {
  _name: 'Lu Xun',
  _age: 137,

  set age(ageIn) {
    if (typeof ageIn === 'number') {
      this._age = ageIn;
    }
    else {
      console.log('Invalid input');
      return 'Invalid input';
    }
  }

};
console.log(person.set age('bdhh'));

// While executing the code is is giving error as uncaught reference error

When I run that I get `SyntaxError: missing ) after argument list` and not the error you say it gives. Try providing a real [mcve] (and quote the **full** error message)\ — Quentin, Feb 27 '18 at 11:26
`person.set age('bdhh')` that's not how setters are used - a quick trip to documentation https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Functions/set#Examples — Jaromanda X, Feb 27 '18 at 11:29

score 1 · Answer 1 · edited Feb 27 '18 at 12:52

1

You're invoking the setter the wrong way.

person.age = 15; // this is how you call your setter

See your updated code in jsFiddle: https://jsfiddle.net/t3uzpobn/4/

edited Feb 27 '18 at 12:52

Alexander Presber

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answered Feb 27 '18 at 11:27

Tomasz Bubała

2,093
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score 0 · Answer 2 · answered Feb 27 '18 at 11:27

The way you call the setter is not correct:

let person = {
  _name: 'Lu Xun',
  _age: 137,

  set age(ageIn) {
    if (typeof ageIn === 'number') {
      this._age = ageIn;
    }
    else {
      console.log('Invalid input');
      return 'Invalid input';
    }
  }

};
console.log(person.age = 'bdhh');
console.log(person.age = 13);

score 0 · Answer 3 · answered Feb 27 '18 at 11:28

Your calling method is not correct

let person = {
  _name: 'Lu Xun',
  _age: 137,

  set age(ageIn) {
    if (typeof ageIn === 'number') {
      this._age = ageIn;
    }
    else {
      console.log('Invalid input');
      return 'Invalid input';
    }
  }

};
console.log(person.age = 'bdhh');

uncaught reference error while using setter method in Javascript

3 Answers3