How to create checkbox inside dropdown?

I want to create a multiple selection dropbox list. Actually I have to select more than one option using a dropdown menu. When I simply do this as shown bellow:

<select>
 <option><input type="checkbox"></option>
</select>

Then checkbox is showing in front of dropdown field. But I want to create it for each option not for as a whole so that I can select more than option. Is there any way to do this?

Answers:

Answer

Here is a simple dropdown checklist

css

.dropdown-check-list {
  display: inline-block;
}
.dropdown-check-list .anchor {
  position: relative;
  cursor: pointer;
  display: inline-block;
  padding: 5px 50px 5px 10px;
  border: 1px solid #ccc;
}
.dropdown-check-list .anchor:after {
  position: absolute;
  content: "";
  border-left: 2px solid black;
  border-top: 2px solid black;
  padding: 5px;
  right: 10px;
  top: 20%;
  -moz-transform: rotate(-135deg);
  -ms-transform: rotate(-135deg);
  -o-transform: rotate(-135deg);
  -webkit-transform: rotate(-135deg);
  transform: rotate(-135deg);
}
.dropdown-check-list .anchor:active:after {
  right: 8px;
  top: 21%;
}
.dropdown-check-list ul.items {
  padding: 2px;
  display: none;
  margin: 0;
  border: 1px solid #ccc;
  border-top: none;
}
.dropdown-check-list ul.items li {
  list-style: none;
}
.dropdown-check-list.visible .anchor {
  color: #0094ff;
}
.dropdown-check-list.visible .items {
  display: block;
}

// Markup and script

<body>

    <div id="list1" class="dropdown-check-list" tabindex="100">
        <span class="anchor">Select Fruits</span>
        <ul class="items">
            <li><input type="checkbox" />Apple </li>
            <li><input type="checkbox" />Orange</li>
            <li><input type="checkbox" />Grapes </li>
            <li><input type="checkbox" />Berry </li>
            <li><input type="checkbox" />Mango </li>
            <li><input type="checkbox" />Banana </li>
            <li><input type="checkbox" />Tomato</li>
        </ul>
    </div>

    <script type="text/javascript">

        var checkList = document.getElementById('list1');
        checkList.getElementsByClassName('anchor')[0].onclick = function (evt) {
            if (checkList.classList.contains('visible'))
                checkList.classList.remove('visible');
            else
                checkList.classList.add('visible');
        }

        checkList.onblur = function(evt) {
            checkList.classList.remove('visible');
        }
    </script>

</body>
Answer

This can't be done in just HTML (with form elements into option elements).

Or you can just use a standard select multiple field.

<select multiple>
  <option value="a">a</option>
  <option value="b">b</option>
  <option value="c">c</option>
</select>
Answer

You can always use multiple or multiple = "true" option with a select tag, but there is one jquery plugin which makes it more beautiful. It is called chosen and can be found here.

This fiddle-example might help you to get started

Thank you.

Answer

Multiple drop downs with checkbox's and jQuery.

<div id="list3" class="dropdown-check-list" tabindex="100">
<span class="anchor">Which development(s) are you interested in?</span>
  <ul class="items">
      <li><input id="answers_2529_the-lawns" name="answers[2529][answers][]" type="checkbox" value="The Lawns"/><label for="answers_2529_the-lawns">The Lawns</label></li>
      <li><input id="answers_2529_the-residence" name="answers[2529][answers][]" type="checkbox" value="The Residence"/><label for="answers_2529_the-residence">The Residence</label></li>
  </ul>
</div>

<style>
.dropdown-check-list{
display: inline-block;
width: 100%;
}
.dropdown-check-list:focus{
outline:0;
}
.dropdown-check-list .anchor {
width: 98%;
position: relative;
cursor: pointer;
display: inline-block;
padding-top:5px;
padding-left:5px;
padding-bottom:5px;
border:1px #ccc solid;
}
.dropdown-check-list .anchor:after {
position: absolute;
content: "";
border-left: 2px solid black;
border-top: 2px solid black;
padding: 5px;
right: 10px;
top: 20%;
-moz-transform: rotate(-135deg);
-ms-transform: rotate(-135deg);
-o-transform: rotate(-135deg);
-webkit-transform: rotate(-135deg);
transform: rotate(-135deg);
}
.dropdown-check-list .anchor:active:after {
right: 8px;
top: 21%;
}
.dropdown-check-list ul.items {
padding: 2px;
display: none;
margin: 0;
border: 1px solid #ccc;
border-top: none;
}
.dropdown-check-list ul.items li {
list-style: none;
}
.dropdown-check-list.visible .anchor {
color: #0094ff;
}
.dropdown-check-list.visible .items {
display: block;
}
</style>

<script>
jQuery(function ($) {
        var checkList = $('.dropdown-check-list');
        checkList.on('click', 'span.anchor', function(event){
            var element = $(this).parent();

            if ( element.hasClass('visible') )
            {
                element.removeClass('visible');
            }
            else
            {
                element.addClass('visible');
            }
        });
    });
</script>
Answer

var expanded = false;

function showCheckboxes() {
  var checkboxes = document.getElementById("checkboxes");
  if (!expanded) {
    checkboxes.style.display = "block";
    expanded = true;
  } else {
    checkboxes.style.display = "none";
    expanded = false;
  }
}
.multiselect {
  width: 200px;
}

.selectBox {
  position: relative;
}

.selectBox select {
  width: 100%;
  font-weight: bold;
}

.overSelect {
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  bottom: 0;
}

#checkboxes {
  display: none;
  border: 1px #dadada solid;
}

#checkboxes label {
  display: block;
}

#checkboxes label:hover {
  background-color: #1e90ff;
}
<form>
  <div class="multiselect">
    <div class="selectBox" onclick="showCheckboxes()">
      <select>
        <option>Select an option</option>
      </select>
      <div class="overSelect"></div>
    </div>
    <div id="checkboxes">
      <label for="one">
        <input type="checkbox" id="one" />First checkbox</label>
      <label for="two">
        <input type="checkbox" id="two" />Second checkbox</label>
      <label for="three">
        <input type="checkbox" id="three" />Third checkbox</label>
    </div>
  </div>
</form>

Answer

Very simple code with Bootstrap and JQuery without any additionnal javascript code :

HTML :

<div class="dropdown">
  <button class="btn btn-secondary dropdown-toggle" type="button" id="dropdownMenuButton" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
    Dropdown button
  </button>
  <form class="dropdown-menu" aria-labelledby="dropdownMenuButton">
    <label class="dropdown-item"><input type="checkbox" name="" value="one">First checkbox</label>
    <label class="dropdown-item"><input type="checkbox" name="" value="two">Second checkbox</label>
    <label class="dropdown-item"><input type="checkbox" name="" value="three">Third checkbox</label>
  </form>
</div>

CSS :

.dropdown-menu label {
  display: block;
}

https://codepen.io/funkycram/pen/joVYBv

Answer

Simply use bootstrap-multiselect where you can populate dropdown with multiselect option and many more feaatures.

For doc and tutorials you may visit below link

https://www.npmjs.com/package/bootstrap-multiselect

http://davidstutz.de/bootstrap-multiselect/

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