问题描述
我的意思是，如果我需要，例如，在悬浮链接中选择的文本是红色的，我可以在CSS样式中使用下面的代码？
I mean if I need, for example, selected text in a hovered link be red, could I use the following code in CSS style?
.abc:hover:selection{color:red}
和
<a href="123" class="abc">4567890</a>
当我选择它的一部分时，链接，当我悬停它时变成红色，正确的语法为这样的伪类组合？
Would that link, when I select part of it, become red colored when I hover it and is this correct syntax for such pseudo-classes combining?
推荐答案
如果你在谈论伪类，
除了在这种情况下， :: selection 不是伪类，伪元素不是CSS1或CSS2的一部分，或任何当前规格的事情。这是伪选择器这个术语的缩写，因为它们是两个完全不同的东西。
Except in this case, ::selection is not a pseudo-class, it's a pseudo-element that's not part of CSS1 or CSS2, or any current spec for that matter. And this is where the term "pseudo-selector" falls short, because they're two completely different things.
正确的语法是：hover 和双冒号 :: selection ，与伪类不同，伪元素必须总是最后：
The correct syntax is a single colon for :hover and double colons for ::selection, and unlike pseudo-classes, pseudo-elements must always come last:
.abc:hover::selection{color:red}
即使如此，由于 :: selection 的工作原理（或不是），在浏览器中的效果。
And even then, because of the way ::selection works (or doesn't), it's not guaranteed to actually have an effect in browsers.
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