Function getActiveElement

code/controlled-uncontrolled/public/app.js:314–324

* Same as document.activeElement but wraps in a try-catch block. In IE it is * not safe to call document.activeElement if there is nothing focused. * * The activeElement will be null only if the document or document body is not * yet defined. * * @param {?DOMDocument} doc Defaults to current d

(doc)

 * @return {?DOMElement}
 */
function getActiveElement(doc) /*?DOMElement*/{
  doc = doc || (typeof document !== 'undefined' ? document : undefined);
  if (typeof doc === 'undefined') {
    return null;
  }
  try {
    return doc.activeElement || doc.body;
  } catch (e) {
    return doc.body;
  }
}

module.exports = getActiveElement;
},{}],9:[function(require,module,exports){