I want to Implement multi-select drop down in salesforce through Visual force page. I want to display my drop down like this Please find below scrren shot :
I have used jquery to add the list in this:
<apex:page standardStylesheets="false" doctype="html-5.0">
<head lang="en">
<!-- jQuery library -->
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js"></script>
</head>
<body>
<apex:form >
<select id="countries" multiple="multiple">
<option value="India">India</option>
<option value="USA">USA</option>
<option value="Japan">Japan</option>
<option value="UK">UK</option>
</select>
<link href="http://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.0.3/css/bootstrap.min.css" rel="stylesheet" type="text/css" />
<script type="text/javascript" src="http://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.0.3/js/bootstrap.min.js"></script>
<link href="http://cdn.rawgit.com/davidstutz/bootstrap-multiselect/master/dist/css/bootstrap-multiselect.css" rel="stylesheet" type="text/css" />
<script src="http://cdn.rawgit.com/davidstutz/bootstrap-multiselect/master/dist/js/bootstrap-multiselect.js" type="text/javascript"></script>
<script type="text/javascript">
$(function () {
$('#countries').multiselect({
includeSelectAllOption: true
});
});
</script>
</apex:form>
</body>
</apex:page>