i have a array and i need to use each of this items , but forEach and $.each dont work for array here a exmple ( [jsfiddle](http://jsfiddle.net/pnsadeghy/4HJ4B/) )

```
var person = new Array();
person["firstName"] = "John";
person["lastName"] = "Doe";
person["age"] = 46;
jQuery.each(person, function(index, item) {
    alert(index + " : " + item);
});

```