js how to use oop in javascript code example

Example 1: js oop

let names = {
    fname: "Dillion",
    lname: "Megida"
}
console.log(names.fname);
console.log(names.hasOwnProperty("mname"));
// Expected Output
// Dillion
// false

Example 2: oop javascript

function DogObject(name, age) {
    let dog = Object.create(constructorObject);
    dog.name = name;
    dog.age = age;
    return dog;
}
let constructorObject = {
    speak: function(){
        return "I am a dog"
    }
}
let bingo = DogObject("Bingo", 54);
console.log(bingo);