After using wrapAll() to create a wrapper, there's no way to get a reference to that wrapper (without reselecting, e.g. with an id).

var wrapper = $('<div />');
$('.some-consecutive-elements').wrapAll(wrapper);
wrapper.append('<span>Some new text</span>'); // Will not work because the "wrapper" variable is not actually a reference to the wrapping element. You must perform a new selection to get the wrapping element.