JAVASCRIPT

constructor function javascript

//Constructor Function
function BellBoy (name, age, hasWorkPermit, languages) {
  this.name = name;
  this.age = age;
  this.hasWorkPermit = hasWorkPermit;
  this.languages = languages;
}

//Create New Object From Constructor Using Arguments
var Earl = new BellBoy('Earl E.Bird', 23, true, ['French', 'German'])

//Access the Properties and Their Values
console.log('Name : ', Earl.name)
console.log('Age : ', Earl.age)
console.log('Verified Work Permit : ', Earl.hasWorkPermit)
console.log('Languages : ', Earl.languages)

js constructor syntax

var MyConstructor = function(p1, p2, p3){
  this.p1 = p1;
  this.p2 = p2;
  this.p3 = p3;
};

What is constructor.constructor()() in JavaScript

const o = {};
o.constructor === Object;