//add this line somewhere in the html
<script src="http://code.jquery.com/jquery-1.11.0.min.js"></script>import $ from "jquery";var script = document.createElement('script');
script.src = 'https://code.jquery.com/jquery-3.4.1.min.js';
script.type = 'text/javascript';
document.getElementsByTagName('head')[0].appendChild(script);var script = document.createElement('script');
script.src = 'https://code.jquery.com/jquery-3.4.1.min.js';
script.type = 'text/javascript';
document.getElementsByTagName('head')[0].appendChild(script);
import $ from 'jquery'$.getScript('ajax/test.js', function() {
alert('Load was performed.');
});
<!DOCTYPE html>
<html>
<head>
<title>jQuery Mobile page</title>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="css/themes/my-custom-theme.css" />
<link rel="stylesheet" href="css/themes/jquery.mobile.icons.min.css" />
<link rel="stylesheet" href="http://code.jquery.com/mobile/1.4.5/jquery.mobile.structure-1.4.5.min.css" />
<script src="http://code.jquery.com/jquery-1.11.1.min.js"></script>
<script src="http://code.jquery.com/mobile/1.4.5/jquery.mobile-1.4.5.min.js"></script>
</head>