1//If URL contains "mystring"
2if (window.location.href.indexOf("mystring") > -1) {
3
4}1<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
2<script type="text/javascript">
3  $(document).ready(function() {
4    if (window.location.href.indexOf("franky") > -1) {
5      alert("your url contains the name franky");
6    }
7  });
8</script>