Filling an array with the same object model

Question

I'am trying to fill an array (rooms) with the same object type (room).

This works fine :

var rooms = new Array(10);

for (var i=0; i<10; i++){
  rooms[i] = new room();
}

Isn't there any other method that takes only one line of code to do the same thing?

I've tried :

var rooms = new Array(10).fill(new room());

but each box of the array contains the same object (same reference).

Thanks.

Answer 1

You should use map method in order to have different objects.

var rooms = new Array(10).fill().map(function(){
   return new room();
});

Answer 2

This will work in (since ES6):

Array(10).fill().map((e,i)=>new room());

Answer 3

Another nice way of doing this would be;

var rooms = Array.from({length:10}, _ => new Room());
rooms[0] === rooms[1] // <- false