Add object to array from constructor

Question

I'm currently working on a platform game which will have a lot of different blocks that will serve as walls and platforms. In order to know if a player has arrived att a point where there's an obstacle, I'd like to loop through an array of all blocks.

I could of course just add the objects to the array after I've created them:

    var blockArray = [];
    var block1 = new Block();
    blockArray.push(block1);

But lets face it, I'm lazy and the code becomes a bit cluttered. Is there some way to add the object to the array from inside the constructor, something like this:

    var blockArray = [];        
    function Block () {
          blockArray.push(this.Block);
    }

where this.Block means the newly created object.

Is there any way to reference an object like this?

Thanks in advance

The constructor really should not do that. Write a function addNewBlock() { blockArray.push(new Block); } that puts the new instance on that global array. — Bergi
– Bergi, Commented May 28, 2018 at 21:24
Be careful with the "this" keyword, in this case, the "this" is implicit which is the most common. — Lucas David Ferrero
– Lucas David Ferrero, Commented May 28, 2018 at 22:18

melpomene · Accepted Answer · 2018-05-28 21:17:10Z

5

Is there any way to reference an object like this?

Yes, it's literally this.

var blockArray = [];

function Block() {
  this.foo = 42;
  blockArray.push(this);
}

new Block();

console.log(blockArray);

answered May 28, 2018 at 21:17

melpomene

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