<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>Untitled Document</title>
<script type="text/javascript" src="https://code.jquery.com/jquery-3.1.1.js"></script>
<script type="text/javascript">
$(document).ready(function() {
alert("123");
});
</script>
</head>
<body>
</body>
</html>
Ccылку на страницу с проблемой