selected = $('div.test-selector li'); selected = $('div.test-selector ul'); selected = $('div.test-selector ol'); selected = $('div.test-selector li.lang-javascript'); selected = $('div.test-selector li.lang-lua'); selected = $('div.test-selector li.lang-c'); selected = $('ul.test-lang li:nth-child(odd),ol.test-lang li:last-child');
第二第三项这么写不合适吧，你这样取出来的是ul，并非每一项的 li。（小白疑问，如有不对请指教，谢谢）
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思想上的小丸子
selected = $('div.test-selector li'); selected = $('div.test-selector ul'); selected = $('div.test-selector ol'); selected = $('div.test-selector li.lang-javascript'); selected = $('div.test-selector li.lang-lua'); selected = $('div.test-selector li.lang-c'); selected = $('ul.test-lang li:nth-child(odd),ol.test-lang li:last-child');