Object Pool in javascript.

pool.js

var Task0 = function() {}
Task0.prototype = {
    init: function(value) {
        this.value = value;
    }
};

var Task1 = {
    init: function(value) {
        this.value = value;        
    }
};

var Pool = {
    generate: function() {
        this._pool = [];
        for (var i = 0, total = 900000; i < total; i++) {
            this._pool.push(Object.create(Task1));
        }
        this._pointer = total - 1;
    },
    get: function() {
        return this._pool[this._pointer--];
    },
    set: function(value) {
        this._pointer++;            
    }
};

var pool = Object.create(Pool);
pool.generate();

var date0 = new Date().valueOf();

var total = 900000;
while(--total > -1) {
    new Task0().init(total);
}

var date1 = new Date().valueOf();

var total = 900000;
while (--total > -1) {
    pool.get().init(total);
}

var date2 = new Date().valueOf();

console.log(date1 - date0);
console.log(date2 - date1);
​