Is there any kind of hash code function in JavaScript?

Question

Basically, I\'m trying to create an object of unique objects, a set. I had the brilliant idea of just using a JavaScript object with objects for the property names. Such as,

Answer 1

The easiest way to do this is to give each of your objects its own unique toString method:

(function() {
    var id = 0;

    /*global MyObject */
    MyObject = function() {
        this.objectId = '<#MyObject:' + (id++) + '>';
        this.toString= function() {
            return this.objectId;
        };
    };
})();

I had the same problem and this solved it perfectly for me with minimal fuss, and was a lot easier that re-implementing some fatty Java style Hashtable and adding equals() and hashCode() to your object classes. Just make sure that you don't also stick a string '<#MyObject:12> into your hash or it will wipe out the entry for your exiting object with that id.

Now all my hashes are totally chill. I also just posted a blog entry a few days ago about this exact topic.