The first set of buttons operate on div1, showing that $('someSelector *') is equivalent to #('someSelector').children()
when there is only ONE level to go down.
Does the next set of buttons work for multiple levels ?
Click the left button and see what happens; then click it again.
Now reload the page and repeat that with the right button.
Finally, reload the page and click one button, followed by the other.
You may wish to try the same thing on outerUl
&
The next set of buttons operate on div2 and its InnerUl.
Notice how parents() includes the body and html tags and therefore all their subtrees.