<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script> <script type="text/javascript"> $(document).ready(function() { if (window.location.href.indexOf("franky") > -1) { alert("your url contains the name franky"); } }); </script>
const isAbsoluteUrl = url => /^[a-z][a-z0-9+.-]*:/.test(url); // Example isAbsoluteUrl('https://1loc.dev'); // true isAbsoluteUrl('https://1loc.dev/foo/bar'); // true isAbsoluteUrl('1loc.dev'); // false isAbsoluteUrl('//1loc.dev');