title: Applying number format on dropdown appended array
body: <p>Applying number format on dropdown appended array    </p>
  
  <pre><code>arr = jQuery.parseJSON(data); &lt;br&gt;
                    for(i=0;i&lt;arr.length;i++){&lt;br&gt;
                       $("#input_car_model").append(new Option(arr[i]['model']+" ("+arr[i]['cnt']+" 대)", arr[i]['model']));
                    }
  </code></pre>
  
  <p>Hello, I have a question about number_format <br>
  This part <code>"arr[i]['cnt']"</code> is number, and i want it to be shown like 100,000. <br>
  How can I apply number_format in this case? <br>
  Thank you!</p>