JavaScript ComboBox

Set the multiSelect property of the jqxComboBox. Author: http://jqwidgets.com

HTML

<link rel="stylesheet" href="http://jqwidgets.com/public/jqwidgets/styles/jqx.base.css">
<link rel="stylesheet" href="http://jqwidgets.com/public/jqwidgets/styles/jqx.energyblue.css">
<script src="http://jqwidgets.com/public/jqwidgets/jqx-all.js"></script>
<div id='jqxComboBox'></div>

JavaScript

var source = [
  "Affogato",
  "Americano",
  "Bicerin",
  "Breve",
  "Café Bombón",
  "Café au lait",
  "Caffé Corretto",
  "Café Crema",
  "Caffé Latte"
];
// Create a jqxComboBox
$("#jqxComboBox").jqxComboBox({
  source: source,
  width: '100%',
  height: '25px',
  multiSelect: true,
  theme: 'energyblue',
  autoComplete: true,
  autoDropDownHeight: true,
  selectedIndex: -1
});