选择所有语言

selected = $('div.test-selector li');

选择所有动态语言

selected = $('div.test-selector ul li');

选择所有静态语言

selected = $('div.test-selector ol li');

选择JavaScript

selected = $('ul.test-lang li:first-child');

选择Lua

selected = $('ul.test-lang li:last-child');

选择C

selected = $('ol.test-lang li:nth-child(3)');