get element inside element jquery code example

Example 1: jquery find

$( "li.item-ii" ).find( "li" ).css( "background-color", "red" );

Example 2: (this).find

$('article a').click(function() {
    $(this).parent().find('h3').slideToggle('fast');
});

Example 3: jquery select element inside element

$("#moo") > $("#foo #moo") > $("div#foo span#moo") > $("#foo span") > $("#foo > #moo")