:future
Limited availability
This feature is not Baseline because it does not work in some of the most widely-used browsers.
CSS :future 伪类选择器是一种时间维度伪类，用于匹配那些完全出现在匹配 :current 元素之后的元素。例如，在通过 WebVTT 显示字幕的视频中。
css
:future(p, span) {
display: none;
}
语法
css
:future {
/* ... */
}
示例
CSS
css
:future(p, span) {
display: none;
}
HTML
html
<video controls preload="metadata">
<source src="video.mp4" type="video/mp4" />
<source src="video.webm" type="video/webm" />
<track
label="Chinese"
kind="subtitles"
srclang="zh"
src="subtitles.vtt"
default />
</video>
WebVTT
WEBVTT FILE 1 00:00:03.500 --> 00:00:05.000 这是第一条字幕 2 00:00:06.000 --> 00:00:09.000 这是第二条字幕 3 00:00:11.000 --> 00:00:19.000 这是第三条字幕
规范
| Specification |
|---|
| Selectors Level 4 # the-future-pseudo |
浏览器兼容性
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