input:checked+ol:這個是講當inoput 擁有了checked後它平級的OL擁有的樣式。
input:checked+ol>li:中的大於是指當inoput 擁有了checked後它平級的OL下面兒子輩的li的樣式，孫子輩的不繼承。
Html代碼
<!DOCTYPE html> <html lang="zh-cn"> <head> <meta charset="utf-8" /> <title>使用者介面(UI)元素狀態偽類選擇符 E:checked_CSS參考手冊_web前端開發參考手冊系列</title> <style type="text/css"> input[type=radio]:checked + span{background:blue;} input[type=radio]:checked + span:after{content:" 我被選中了";} input[type=checkbox]:checked + span{background:#f00;} input[type=checkbox]:checked + span:before{content:" 我被選中了";} p.classFather > p.classSon p.classSon{ background-color: lightgray; line-height: 40px; } p.classFather > p.classSon > p.classSonS > p.classSonC { background-color: lightgray; line-height: 40px; } </style> </head> <body> <form method="post" action="#"> <fieldset> <legend>選中下面的項試試</legend> <ul> <li><label><input type="radio" name="colour-group" value="0" /><span>藍色</span></label></li> <li><label><input type="radio" name="colour-group" value="1" /><span>紅色</span></label></li> <li><label><input type="radio" name="colour-group" value="2" /><span>黑色</span></label></li> </ul> </fieldset> <fieldset> <legend>選中下面的項試試</legend> <ul> <li><label><input type="checkbox" name="colour-group2" value="0" /><span>藍色</span></label></li> <li><label><input type="checkbox" name="colour-group2" value="1" /><span>紅色</span></label></li> <li><label><input type="checkbox" name="colour-group2" value="2" /><span>黑色</span></label></li> </ul> </fieldset> <fieldset> <legend>子節點樣式</legend> <p class="classFather"> <p class="classSon">孩子 <p class="classSon">孫子 <p class="classSon">重孫子</p> </p> </p><p class="classSon">孩子 <p class="classSonS">孫子 <p class="classSonC">重孫子</p> </p> </p> </p> </fieldset> </form> </body> </html>
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