javascript - How to post multiselect selected options as one param in url - Bootstrap Multiselect -

i using bootstrap-multiselect , need submit form selected options.

however on form submit, url gets ....&sites=1&sites=2&sites=3 while need ...&sites=1,2,3

here 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 list in `text` 1,2,3 need in url       //do rest , continue submit 

how can post these selected values in url (i.e url/sites=1,2,3 instead of url/sites=1&sites=2&sites=3)

thanks help!

you may rename select sites[]

<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> 

this send server submit without js 1 variable sites array multi selected options.