Pass an object method an array of strings (Javascript)

Question

The goal is to pass an array of strings (Substitute teacher names) to the 'pickSubstituteTeacher' method and return one random teacher. I cannot figure out how to send an array of strings to the object method and return the random value.

class School {
  constructor(name, level, numberOfStudents) {
    this._name = name;
    this._level = level;
    this._numberOfStudents = numberOfStudents;
  }

  static pickSubstituteTeacher(substituteTeachers) {
    let ranNum = Math.floor(Math.random()*substituteTeachers.length);
    return substituteTeachers[ranNum];
  }
}

const school1 = new School('school1', 'two', 233);


let randomTeacher = School.pickSubstituteTeacher['teacher1','teacher2','teacher3'];

console.log(randomTeacher);

sorta related - you've made pickSubstitudeTeacher a static method, so you should be calling it with School.pickSubstituteTeacher -- or did you mean to not make it static? — chazsolo
– chazsolo, Commented Oct 22, 2018 at 20:27
@chazsolo you're right. I should be using School.pickSubstituteTeacher. But I still don't know how to pass it an array and return the randomly generated value. — Calisto
– Calisto, Commented Oct 22, 2018 at 20:28

Barmar · Accepted Answer · 2018-10-22 20:30:56Z

1

You have to put parentheses around the array to indicate that the array is the argument to the method.

let randomTeacher = School.pickSubstituteTeacher(['teacher1','teacher2','teacher3']);

answered Oct 22, 2018 at 20:30

Barmar

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1 Comment

Calisto Over a year ago

Case closed. Thank you very much!

Boji · Accepted Answer · 2018-10-22 20:40:50Z

1

You are sooo close...

Go with this: let randomTeacher = School.pickSubstituteTeacher(['teacher1', 'teacher2', 'teacher3']);

answered Oct 22, 2018 at 20:40

Boji

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