Why doesn't JS work on IOS on a certain site?

I

igossmart2019-10-06 20:45:18

JavaScript

igossmart, 2019-10-06 20:45:18

All the best, I ran into a problem, my iPhone 5s phone does not want to execute js on a certain site, everything is on in the browser settings.
here is the page code.

<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8" />


</head>
<body style="margin: 0; padding: 0; width: 100vw;height: 100vh; background: #ff00f0">
</body>

 <script src="js.js"></script>

</html>

Here js Also does not work, one function and that there are problems. Thanks in advance.
alert('готово');