Anyway to get an indexed item from $(".box")
<p>Suppose I get a list of items like <code>$(".box")</code>. Is it possible to get an indexed jQuery object </p>

<p>like </p>

<pre><code>var $boxes = $(".box"),
    $box2 = $boxes[1]
</code></pre>

<p>currently I do something like</p>

<pre><code>var $boxes = $(".box");
$boxes.each(function(i, box) {
    var $box = $(box); // &lt;-- is this a good idea?
    // do something with $box
});
</code></pre>

<p>I wonder tho if the line <code>var $box = $(box)</code> is such a good idea? I am actually running that in a <code>setInterval()</code></p>

<p>like</p>

<pre><code>var $boxes = $(".box");
setInterval(function() {
    $boxes.each(function(i, box) {
        var $box = $(box); // &lt;-- is this a good idea?
        // do something with $box
    });
}, 1000);
</code></pre>

<p>I wonder if its bad for performance since I am initializing a variable for each item in <code>$boxes</code> per 1s in this example. If I can access the element directly from the jQuery "array" or whatever $boxes is, it maybe better?</p>
