JavaScript noteval (from phiggins)

noteval.js

// Untested mod of phiggins' original gist. Maybe I'll actually try it someday.

function noteval( code, doc ) {
  // add some javascript to a document, like an iframe
  //
  // var iframe = document.getElementById('theframe'),
  //     iframeDoc = iframe.contentDocument || iframe.contentWindow.document;
  //
  // noteval('alert("hi")', iframeDoc);

  var parent = doc.head || doc.body || doc.documentElement,
      scr = doc.createElement('script'),
      method = 'text' in scr ? 'text'
        : 'textContent' in scr ? 'textContent'
        : 'innerHTML' in scr ? 'innerHTML'
        : null;

  if ( method ) {
    scr[method] = code;
  } else {
    scr.appendChild( doc.createTextNode(code) );
  }

  parent.appendChild(scr);
  parent.removeChild(scr);
}