All You Need for JSONP

I have just uploaded a truly simple, still robust, function able to do generic JSONP without pretending too much magic.

The concept is simple, we pass the url, including the parameter name used to communicate the callback name, and a callback as second argument ... that's it, 202 216 bytes minified and gzipped ( many thanks @jdalton for the catch )

Here an example:

<!-- the generic HTML page -->
<script src="JSONP.js"></script>
<script>
this.onload = function () {
 var many = 0;
 JSONP("test.php?callback", function (a, b, c) {
  this.document.body.innerHTML += [
   a, b, ++many, c
  ].join(" ") + "<br />";
 });
 JSONP("test.php?callback", function (a, b, c) {
  this.document.body.innerHTML += [
   a, b, ++many, c
  ].join(" ") + "<br />";
 });
};
</script>

And here the testable demo result that should work with every bloody damned browser.

What's on the server? Nothing more than this:

<?php
if (isset($_GET['callback'])) {
 header('Content-Type: application/javascript');
 exit($_GET['callback'].'.call(window, "Hello", "JSONP", "!!!")');
}
?>

Enjoy ;)