JavaScript：如何将对象存储在数组中？

Question

function CreateSuit(suit){
  this.suit = suit;
  this.vaule = i;
  this.name = name;
}

var twoClubs = new Card ('clubs', 2, 'two of clubs');
var threeClubs = new Card ('clubs', 3, 'three of clubs');
var fourClubs = new Card ('clubs', 4, 'four of clubs');

var deck = [];

How do I put these objects into the deck array? Sorry if this is a dumb question I am having trouble finding an answer.

Answer 1

You have a few options, as mentioned in the comments.

1) Instantiate the array with the objects:

var deck = [twoClubs, threeClubs, fourClubs];

2) Add the objects onto the array:

var deck = [];
deck.push(twoClubs);
deck.push(threeClubs);
deck.push(fourClubs);

3) You could even instantiate the array and declare the objects at the same time:

var deck = [new Card ('clubs', 2, 'two of clubs'), new Card ('clubs', 3, 'three of clubs'), new Card ('clubs', 4, 'four of clubs')];

Technically, this is the most efficient way (caveat: this is browser/implementation dependent).

Answer 2

There are a few ways to do this. You can initialize the array with the values present:

var deck = [twoClubs, threeClubs, fourClubs]

Or you can add them to the array on the fly:

var deck = [];
deck.push(twoClubs);
deck.push(threeClubs);
deck.push(fourClubs);

Or you can even specify where in the array you want to put them:

var deck = [];
deck[2] = threeClubs;
deck[0] = fourClubs;
deck[1] = twoClubs

Or you can mix and match any of these:

var deck = [threeClubs];
deck[1] = twoClubs;
deck.push(fourClubs);

Answer 3

Now once you have added object in array using either of methods mentioned in other answers.

var deck = [twoClubs, threeClubs, fourClubs];

or

var deck = [];
deck.push(twoClubs);
deck.push(threeClubs);
deck.push(fourClubs);

you can retrieve and remove last object from array by using

deck.pop(); // remove and return last object

or you can use indexes to retrieve object from specific location

deck[1] // returns threeClubs