<link href="//maxcdn.bootstrapcdn.com/bootstrap/4.1.1/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="//maxcdn.bootstrapcdn.com/bootstrap/4.1.1/js/bootstrap.min.js"></script>
<script src="//cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<!------ Include the above in your HEAD tag ---------->
<div class="container">
<div class="row">
<h2><a href="skype:+123456789"> Create your snippet's HTML, CSS and Javascript in the editor tabs</a></h2>
</div>
</div>
$(document).ready(function(){
if ($(window).width() < 767) {
$('a[href^="skype"]').each(function(){
var oldUrl = $(this).attr("href"); // Get current url
var newUrl = oldUrl.replace("skype:+", "tel:+"); // Create new url
$(this).attr("href", newUrl); // Set herf value
});
}
});
