jquery-1.9.1/ui-1.9.2
https://jsfiddle.net/x2dnmL0j/
jquery.noconflict
<head>
<title></title>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/1.6.4/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jqueryui/1.8.13/jquery-ui.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jqueryui/1.12.1/jquery-ui.min.js"></script>
<script>
//This means that jquery declared first will be maintained with standard namespace and last one will get the name $3.
var $3 = jQuery.noConflict(true)
console.log("old:",$.fn.jquery, $.ui.version)
console.log("new:",$3.fn.jquery, $3.ui.version)
</script>
</head>