按钮必须有可访问名称（对屏幕阅读器来说有“名字”），这个名字可以来自按钮的可见文本、aria-label、或 aria-labelledby；如果 SVG 只是装饰，给它 aria-hidden="true"（同时 focusable="false"）；如果 SVG 本身承载语义（例如显示状态），确保它参与名称或用 ARIA 状态描述按钮（例如 aria-pressed / aria-expanded）。

Docusaurus blogging features are powered by the blog plugin.

Here are a few tips you might find useful.

Blog posts support Docusaurus Markdown features, such as MDX.

This is the summary of a very long blog post,

Use a <!-- truncate --> comment to limit blog post size in the list view.

Lorem ipsum dolor sit amet...