Boostrap Select - Javascript Selectbox Question

Hi Experts,

I am using Bootstrap Select Library for my project to replace my select boxes.  I needed the feature to add custom text into it as well so that user should be able submit text which is not a option. While searching on web, I landed on < this fiddle which allows you to do that.

Now my main issue is that I have alot of dynamic selectbox and it will not be possible to put it the code for each and every selectbox. Throughout my website, my selectbox's have one common class (combobox). Is it possible to make it work with the class name and also if there are multiple selectbox per page, it should change add the value to the selectbox it was added on.

Rahul SehrawatAsked:
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Julian HansenCommented:
Here is an attempt at it
CSS (from fiddle)
<style type="text/css">
.dropdown-menu {
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    -khtml-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;

.dropdown-menu a {
   overflow: hidden;
   outline: none;

.additem input
   outline: none;
   color: #000;
   width: 99%;

.additem:hover input
   background-color: #f5f5f5;

.additem .check-mark
   opacity: 0;
   z-index: -1000;

.addnewicon {
   position: relative;
   padding: 4px;
   margin: -8px;
   padding-right: 50px;
   margin-right: -50px;
   color: #aaa;

.addnewicon:hover {
   color: #222;

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HTML - this shows two select boxes that are standard bootstrap selects - the code in the jQuery section will add the Add option to all selectpicker's on the page - it is a trivial change to separate out only those selectpickers that must have addoptions
    <div class="row">
      <div class="col-lg-6">
        <h2>Select Sample #1</h2>
        <select class="selectpicker" id="select1">
      <div class="col-lg-6">
        <h2>Select Sample #2</h2>
        <select class="selectpicker" id="select2">

Open in new window

jQuery (functions taken from fiddle and modified to be dynamic). The solution is to find the closet item with a .bootstrap-select class and then select the .prev() item.
$(function() {
  var content = "<input type=text onKeyDown='event.stopPropagation();' onKeyPress='addSelectInpKeyPress(this,event)' onClick='event.stopPropagation()' placeholder='Add item'> <span class='glyphicon glyphicon-plus addnewicon' onClick='addSelectItem(this,event,1);'></span>";

  var divider = $('<option/>')
          .data('divider', true);

  var addoption = $('<option/>')
          .data('content', content)


function addSelectItem(t,ev)

   var txt=$(t).prev().val().replace(/[|]/g,"");
   if ($.trim(txt)=='') return;
   var p=$(t).closest('.bootstrap-select').prev();
   var o=$('option', p).eq(-2);
   o.before( $("<option>", { "selected": true, "text": txt}) );

function addSelectInpKeyPress(t,ev)

   // do not allow pipe character
   if (ev.which==124) ev.preventDefault();

   // enter character adds the option
   if (ev.which==13)

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Working sample here

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Rahul SehrawatAuthor Commented:
Awesome. Thanks :) works like a charm.
Julian HansenCommented:
You are welcome.
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