Create a Dynamic search bar for checkboxes elements JavaScript

Question

I'm trying to make a search bar which shows elements based on their text according to what you enter in a search bar. But most instructions online are about arrays or lists and I can't adapt my code to include those.

I have a succession of checkboxes created according to an array and I don't know how to proceed.

I whould like something like if I write "J" in the search bar, I would see the checkboxes "January" "June" "July".

Here is a snippet to help you to understand. I would prefer Javascript instead of jQuery.

//array of options (change this array and you change the checkboxes)
var choices = new Array();
choices[0] = "January";
choices[1] = "February";
choices[2] = "March";
choices[3] = "April";
choices[4] = "May";
choices[5] = "June";
choices[6] = "July";
choices[7] = "August";
choices[8] = "September";
choices[9] = "October";
choices[10] = "November";
choices[11] = "December";

//array of value which have to be automaticly selected
var target = new Array()
target[0] = "9";
target[1] = "8";
target[2] = "11";

var cbh = document.getElementById('checkboxes');
var val = '';
var cap = "";

var j = "";
var t = document.getElementById('t');

// the loop is creating the checkboxes with name, value...
for (var i in choices) {
  //Name of checkboxes are their number so I convert the i into a string. 
  j = i.toString();

  val = j;
  //cap will be the value/text of choices[i]
  var cb = document.createElement('input');
  var label = document.createElement("label");

  cap = choices[i];
  var text = document.createTextNode(cap);
  cb.type = 'checkbox';
  cbh.appendChild(cb);
  cb.name = cap;
  cb.value = val;
  label.appendChild(cb);
  label.appendChild(text);
  cbh.appendChild(label);
  cb.addEventListener('click', updateText)
  if(target.indexOf(i)>=0){
    cb.checked =true ;
  }
}
//function which update the text area according to which checkbox is selected or not
updateText();
function updateText() {
  t.value = [null, ...document.querySelectorAll('#checkboxes [type="checkbox"]')].reduce((s, el) => el && el.checked ? s = (s || '') + el.value + '$#' : s || '')
}

			* {
    			box-sizing: border-box;
			}
			#data {
			    padding:5px;
				width:100vw;
			}
			.multiselect {
				overflow: visible;
				padding:0;
				padding-left:1px;
				border:none;
				background-color:#eee;
				width:100vw;
				white-space: normal;
				height:75px;
			}
			.checkboxes {
				height:100px;
				width:100px;
				border:1px solid #000;
				background-color:white;
				margin-left:-1px;
				display:inline-block;
			}
      
            label {
				display: inline-block;
				border: 1px grey solid;
				padding:5px;
			}

<span onclick="">All</span> | <span onclick="">Selected</span> <input type="text" id="SearchBar" placeholder="Search for options..">
	<form>
	<div id="data">
		<div class="multiselect">
			<div id="c_b">
				<div id="checkboxes">
				</div>
			</div>
		</div>
	</div>
</form>

<textarea id="t"></textarea>

Answer 1

You can use this JavaScript/JQuery function:

function updateCheckboxes(x) {
  if ($('#SearchBar').val() == '') {
    $('#checkboxes > label').show();
  } else {
    $('#checkboxes > label').hide();
    $('#checkboxes > label:contains('+$('#SearchBar').val()+')').show();
  }
}

And call it oninput in the input, with this line:

<input id="SearchBar" placeholder="Search for options.." type="text" oninput="updateCheckboxes(this)" autocomplete="off">

And include JQuery like this at the bottom/top of the head/body;

<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>

//array of options (change this array and you change the checkboxes)
var choices = new Array();
choices[0] = "January";
choices[1] = "February";
choices[2] = "March";
choices[3] = "April";
choices[4] = "May";
choices[5] = "June";
choices[6] = "July";
choices[7] = "August";
choices[8] = "September";
choices[9] = "October";
choices[10] = "November";
choices[11] = "December";
//array of value which have to be automaticly selected
var target = new Array();
target[0] = "9";
target[1] = "8";
target[2] = "11";
var cbh = document.getElementById('checkboxes');
var val = '';
var cap = "";
var j = "";
var t = document.getElementById('t');
// the loop is creating the checkboxes with name, value...
for (var i in choices) {
  //Name of checkboxes are their number so I convert the i into a string. 
  j = i.toString();
  val = j;
  //cap will be the value/text of choices[i]
  var cb = document.createElement('input');
  var label = document.createElement("label");
  cap = choices[i];
  var text = document.createTextNode(cap);
  cb.type = 'checkbox';
  cbh.appendChild(cb);
  cb.name = cap;
  cb.value = val;
  label.appendChild(cb);
  label.appendChild(text);
  cbh.appendChild(label);
  cb.addEventListener('click', updateText);
  if (target.indexOf(i) >= 0) {
    cb.checked = true;
  }
}
updateText();
//function which update the text area according to which checkbox is selected or not
function updateText() {
  t.value = [null, ...document.querySelectorAll('#checkboxes [type="checkbox"]')].reduce((s, el) => el && el.checked ? s = (s || '') + el.value + '$#' : s || '');
}
$.expr[":"].contains = $.expr.createPseudo(function(arg) {
    return function( elem ) {
        return $(elem).text().toUpperCase().indexOf(arg.toUpperCase()) >= 0;
    };
});
function updateCheckboxes(x) {
  if ($('#SearchBar').val() == '') {
    $('#checkboxes > label').show();
  } else {
    $('#checkboxes > label').hide();
    $('#checkboxes > label:contains('+$('#SearchBar').val()+')').show();
  }
}

* {
  box-sizing: border-box;
}
#data {
  padding: 5px;
  width: 100vw;
}
.multiselect {
  overflow: visible;
  padding: 0;
  padding-left: 1px;
  border: none;
  background-color: #eee;
  width: 100vw;
  white-space: normal;
  height: 75px;
}
.checkboxes {
  height: 100px;
  width: 100px;
  border: 1px solid #000;
  background-color: white;
  margin-left: -1px;
  display: inline-block;
}
label {
  display: inline-block;
  border: 1px grey solid;
  padding: 5px;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<!DOCTYPE html>
<html>
<head>
  <title></title>
</head>
<body>
  <span onclick="">All</span> | <span onclick="">Selected</span>
  <form>
    <input id="SearchBar" placeholder="Search for options.." type="text" oninput="updateCheckboxes(this)" autocomplete="off">
  </form>
  <form>
    <div id="data">
      <div class="multiselect">
        <div id="c_b">
          <div id="checkboxes"></div>
        </div>
      </div>
    </div>
  </form>
  <textarea id="t"></textarea>
</body>
</html>

Edit: to make the search case-insensitive, add this amazing JQuery, found here.

$.expr[":"].contains = $.expr.createPseudo(function(arg) {
    return function( elem ) {
        return $(elem).text().toUpperCase().indexOf(arg.toUpperCase()) >= 0;
    };
});