为什么网络浏览器在通过Enter键激活时不应用CSS：active状态？ [英] Why do web browsers don't apply the CSS :active state on activation by enter key?
问题描述
大多数Web浏览器都提供键盘快捷方式来与DOM交互。 例如：
Most web browsers provide keyboard shortcuts to interact with the DOM. e.g.:
Tab 将焦点转移到下一个可聚焦的元素
Alt + Tab 将焦点移到上一个可聚焦的元素
Enter 激活当前关注的元素
Tab shifts the focus to the next focus-able element
Alt + Tab shifts the focus to the previous focus-able element
Enter activates the currently focused element
我现在发现，许多流行的浏览器（Firefox，Chrome，Safari，Internet Explorer）未应用CSS <如果通过按 Enter 键激活元素，则code>：active 伪类。
What I have now figured out is that many popular browsers (Firefox, Chrome, Safari, Internet Explorer) don't apply the CSS :active pseudo-class if an element gets activated by pressing the Enter key.
为什么会这样？
我认为这具有误导性，因为您好像没有触发按钮。
I think it is misleading because it looks like you don't trigger the buttons; although you actually do.
推荐答案
根据 CSS选择器规范：
：active伪类在用户激活元素
时适用。例如，在用户按下鼠标
按钮并释放它的时间之间。 [...]
The :active pseudo-class applies while an element is being activated by the user. For example, between the times the user presses the mouse button and releases it. [...]
因此，标准明确要求：active 当用户单击元素时应用。没有别的了，所以这不是浏览器的问题，这是缺少标准的结果。
So the standard explicitly says that :active should be applied when a user clicks on the element. There is nothing else, so this is not a problem of the browsers, it is a result of a missing standard.
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