:link 未访问html
:visited 已访问ide
:hover 鼠标悬停post
:active 鼠标按下spa
:not(s) 匹配不含s选择器的元素code
:frist-child 父元素的第一个元素orm
:last-child 父元素的最后一个元素htm
:only-child 父元素的惟一一个元素blog
:checked 选中 :checked+伪元素utf-8
<!DOCTYPE html> <html lang="zh-cmn-Hans"> <head> <meta charset="utf-8" /> <title>:checked+伪元素</title> <meta name="author" content="Joy Du(飘零雾雨), dooyoe@gmail.com, www.doyoe.com" /> <style> input:checked + span { background: #f00; } input:checked + span:after { content: " 我被选中了"; } </style> </head> <body> <form method="post" action="#"> <fieldset> <legend>选中下面的项试试</legend> <ul> <li><label><input type="radio" name="colour-group" value="0" /><span>蓝色</span></label></li> <li><label><input type="radio" name="colour-group" value="1" /><span>红色</span></label></li> <li><label><input type="radio" name="colour-group" value="2" /><span>黑色</span></label></li> </ul> </fieldset> <fieldset> <legend>选中下面的项试试</legend> <ul> <li><label><input type="checkbox" name="colour-group2" value="0" /><span>蓝色</span></label></li> <li><label><input type="checkbox" name="colour-group2" value="1" /><span>红色</span></label></li> <li><label><input type="checkbox" name="colour-group2" value="2" /><span>黑色</span></label></li> </ul> </fieldset> </form> </body> </html>
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