Copy via console.

copy_console.js

function copyToClipboard(text) {

   var textArea = document.createElement( "textarea" );
   textArea.value = text;
   document.body.appendChild( textArea );

   textArea.select();

   try {
      var successful = document.execCommand( 'copy' );
      var msg = successful ? 'successful' : 'unsuccessful';
      console.log('Copying text command was ' + msg);
   } catch (err) {
      console.log('Oops, unable to copy');
   }

   document.body.removeChild( textArea );
}