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通过 a:visited 修改已访问的链接样式

a:visited {
color:red;
}

然而 a:visited::before 却是无效的

a:visited::before{
content: '[已访问]';
}

但是除了 :visited 以外的伪类,都可以搭配伪元素::before使用,这是为什么?

有曲线救国的办法吗?


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1 Answer

监听a元素的点击事件,点击事件发生后,就认为visited,然后修改样式,不使用:visited
为什么不能使用是基于安全性的考虑:
:visited伪类的使用限制
image


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