attrMutationDetection

gistfile1.js

var mutationSupported = (function () {
  var el = document.createElement('div'),
      mutationSupported = false;

  function detectMutation() {
    mutationSupported = true;
    this.removeEventListener('DOMAttrModified', detectMutation, false);
  }

  el.addEventListener('DOMAttrModified', detectMutation, false);
  el.setAttribute('foo', 'bar');
  return mutationSupported;
})();