code: function _getDOMElement( container, str ) {
    var el = container.querySelector( '[name=' + str + ']' );
    return el ? el : null;
  }
docs: Returns the first element matching the provided string.
  @param  {object} container DOM element node of parent container.
  @param  {string} str Value to be provided to the selector.
  @return {object}     Element object.