我正在为Articles动态添加CSS类.如果文章最近发布我将CSS类应用为文章未读,但在5秒后,此类必须自动更改为文章阅读.有人可以帮帮我吗?
<section class="news-articles">
<article class="article-unread">Unread Article</article>
<article class="article-read">Read Article</article>
</section>
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.article-unread {color:red;}
.article-read {color:green;}
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