Select Code to Download

<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/co
+demirror/5.53.2/codemirror.min.css"
  integrity="sha256-vZ3SaLOjnKO/gGvcUWegySoDU6ff33CS5i9ot8J9Czk=" cros
+sorigin="anonymous" />
...
  crossorigin="anonymous"></script>
<script src="/?node_id=11116375;displaytype=displaycode;part=2"
  type="text/javascript"></script>

"use strict";
$(function () {
...
        myCodeMirror.setValue(text);
    });
});