Select List Checkboxes

by Kyle Mitofsky

HTML

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/js/bootstrap.min.js"></script>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/css/bootstrap.css">
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/bootswatch/3.3.7/paper/bootstrap.min.css">
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.css">
<h3>Unicode</h3>
<select multiple="" class="form-control select-checkbox" size="5">
  <option>Dog</option>
  <option>Cat</option>
  <option>Hippo</option>
  <option>Dinosaur</option>
  <option>Another Dog</option>
</select>

<h3>Font Awesome</h3>
<select multiple="" class="form-control select-checkbox-fa" size="5">
  <option>Dog</option>
  <option>Cat</option>
  <option>Hippo</option>
  <option>Dinosaur</option>
  <option>Another Dog</option>
</select>



















<div style='position:fixed;bottom:0;left:0; background:lightgray;width:100%;'>
  About this SO Question:
  <a href='https://stackoverflow.com/q/17714705/1366033'>
    How to use Checkbox inside Select Option
  </a>
</div>

CSS

body {
  padding: 15px;
}

.select-checkbox option::before {
  content: "\2610";
  width: 1.3em;
  text-align: center;
  display: inline-block;
}
.select-checkbox option:checked::before {
  content: "\2611";
}

.select-checkbox-fa option::before {
  font-family: FontAwesome;
  content: "\f096";
  width: 1.3em;
  display: inline-block;
  margin-left: 2px;
}
.select-checkbox-fa option:checked::before {
  content: "\f046";
}

JavaScript

$('option').mousedown(function(e) {
    e.preventDefault();
    var originalScrollTop = $(this).parent().scrollTop();
    console.log(originalScrollTop);
    $(this).prop('selected', $(this).prop('selected') ? false : true);
    var self = this;
    $(this).parent().focus();
    setTimeout(function() {
        $(self).parent().scrollTop(originalScrollTop);
    }, 0);
    
    return false;
});