File: //usr/share/rubygems-integration/all/gems/capybara-3.36.0/lib/capybara/spec/views/with_jstree.erb
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-type" content="text/html; charset=utf-8"/>
<title>with_jstree</title>
</head>
<body id="with_jstree">
<div id="container">
<ul>
<li>Child node A</li>
<li>Child node B</li>
<li>Child node C</li>
</ul>
</div>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jstree/3.3.8/jstree.min.js"></script>
<script>
$(function () {
$('#container').jstree({
"core" : { "check_callback" : true }, // so that operations work
"plugins" : ["dnd"]
});
});
</script>
</body>
</html>