Hey guys in this blog we are going to look at creating objects in JS, having properties and methods attached to them :

var car = new Object();//Creating a brand new object...
//Adding properties to the newly created object ...
car.Wheels = 4 ;
car.Mileage = 20.4 ;
car.Brand = "Maruti";
car.Music = "false"
//In order to attach a simple method to a js object we first need to define that method as : 
function setMusic( isMusicOn ){
    if(isMusicOn){
        this.music = true ;
    }else{
        this.music = false ;
    }
}
//Now that we've defined the method we need to attach it to our object...
car.setMusic = setMusic;
//Now we can call the method...
car.setMusic(true);
//So since basic object has been created let's check its properties and method
console.log("No of wheels : " + car.Wheels);
console.log("Mileage : "+car.Mileage);
console.log("Brand : " + car.Brand);
console.log("Music : " + car.Music);

// Sure the above 'car' object is fine on its own but JS provides a short hand notation to create an object
var train = {Capacity: 500, Coaches: 15, Type : "Steam"};
console.log("Capacity of train : " + train.Capacity);
console.log("No of coaches" + train.Coaches);
console.log("Engine Type : " + train.Type);

The given 'train' object creation shows a short hand notation to create objects in javascript,  using set of key-value pairs as properties and value.

Hope it's informative . Cheers!!!