javascript jQuery get object key
<p>I have the following code:</p>

<pre><code>!function($){

    $.keys = {
        backspace: 8,
        tab: 9,
        enter: 13,
        escape: 27,
        space: 32,
        pageUp: 33,
        pageDown: 34,
        end: 35,
        home: 36,
        left: 37,
        up: 38,
        right: 39,
        down: 40,
        delete: 46,
        numpadEnter: 108,
        comma: 188
    };

}(window.jQuery);
</code></pre>

<p>And I want to build a function that returns a string of a key code for example:</p>

<pre><code>$.keys.toString = function(key){
  switch(key){
    case $.keys.backspace:
      return 'backspace';
  }
};
</code></pre>

<p>The list would ofcourse be bigger, and support all the keys of the $.keys object. But is there a possibility that the $.keys.toString function actually uses the $.keys array to convert the int to string, so I don't have to make a switch statement.</p>

<p>Something like getKeyFromObjectValue?</p>

<p>Thanks for help :)</p>
