file_script_template.html

Enable keyboard shortcuts

<!DOCTYPE html>

<html>

<head>

<meta http-equiv="Content-Security-Policy" content="default-src 'unsafe-inline'">

<template id="a">

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

</template>

</head>

<body>

<script>

  var temp = document.getElementsByTagName("template")[0];

  var clon = temp.content.cloneNode(true);

  document.body.appendChild(clon);

</script>

</body>

</html>