Draphar/extern.js

## extern.js
var text = document.currentScript.getAttribute('data-variable'); // text is now 'Lorem ipsum dolor sit amet'

## index.php
<?php
  /* Using PHP for this example. You can use any server side language which can output something to the site.
   * Made by Draphar
   */
  $variable='Lorem ipsum dolor sit amet'; // any value which can be transformed into a string
?>
<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">
    <script>
      var text = "<?php echo htmlentities($variable);?>"; // easy for inline scripts
    </script>
    <script src="extern.js" data-variable="<?php echo htmlentities($variable);?>"></script>
  </head>
  <body>

  </body>
</html>
	<?php
	/* Using PHP for this example. You can use any server side language which can output something to the site.
	* Made by Draphar
	*/
	$variable='Lorem ipsum dolor sit amet'; // any value which can be transformed into a string
	?>
	<!DOCTYPE html>
	<html>
	<head>
	<meta charset="utf-8">
	<script>
	var text = "<?php echo htmlentities($variable);?>"; // easy for inline scripts
	</script>
	<script src="extern.js" data-variable="<?php echo htmlentities($variable);?>"></script>
	</head>
	<body>

	</body>
	</html>