人 民 网 版 权 所 有 ，未 经 书 面 授 权 禁 止 使 用
* @param arr 数组，推荐阅读WPS官方版本下载获取更多信息
Shadow DOM is a web component feature that lets you attach an isolated DOM subtree to any HTML element, hidden from the main document’s standard queries. A querySelector('audio') on the main document cannot see inside a Shadow Root unless you specifically traverse into it. If fermaw’s player was mounted inside a Shadow Root, basic DOM searches would come up empty.，更多细节参见谷歌浏览器【最新下载地址】
Алевтина Запольская (редактор отдела «Бывший СССР»)。搜狗输入法2026对此有专业解读