I am using [bootstrap-multiselect](http://davidstutz.github.io/bootstrap-multiselect) and need to submit form with selected options.

However on form submit, url gets like this `....&sites=1&sites=2&sites=3` while I need it to be `...&sites=1,2,3` 

Here is my code:

```
<select id="sites" name="sites" class="form-control" multiple="multiple">
    <option value="1">Site 1</option>
    <option value="2">Site 2</option>
    <option value="3">Site 3</option>
</select>

```

JS:

```
$('button[type=submit]').click(function () {

      var text = $('#sites').val()
      //I have the list in `text` as 1,2,3 which need to in url
      //do the rest and continue submit

```

How can I POST these selected values in url (i.e `url/sites=1,2,3` instead of `url/sites=1&sites=2&sites=3`) 

Thanks for any help!