jquery select siblings 'until'

Question

I have a DOM in the form of

Answer 1

You can iterate through the nextAll div siblings elements until you find the following .parent, check this example:

$('.parent').click(function() {
  $(this).nextAll('div').each(function() {
    if ($(this).is('.parent')) {
      return false; // next parent reached, stop
    }
    $(this).toggleClass('highlight');
  });
});

Markup used:

parent 1
child
child
parent 2
child
parent 3
child
child
child

...