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JS Object Constructors

// Constructor function for Person objects
function Person(first, last, age, eye, nationality) {
  this.firstName = first;
  this.lastName = last;
  this.age = age;
  this.eyeColor = eye;
this.nationality = nationality;
}

// Create 2 Person objects
const myFather = new Person("John", "Doe", 50, "blue", "Canadian");
const myMother = new Person("Sally", "Rally", 48, "green", "English");

// Display nationality
document.getElementById("demo").innerHTML =
"My father is " + myFather.nationality + ". My mother is " + myMother.nationality;

Object properties can have default values. However, the default value applies to all person objects.