And that's a wrap — we hope you had fun playing with video and audio in web pages! In the next article, we'll look at other ways of embedding content on the Web, using technologies like <iframe> and <object>.
HTML<track>元素被当作媒体元素—<audio>和<video>的子元素来使用。它允许指定计时字幕(或者基于事件的数据),例如自动处理字幕。 track给媒体元素添加的数据的类型在kind属性中设置,属性值可以是subtitles,captions,descriptions,chapters或metadata。该元素指向当用户请求额外的数据时浏览器公开的包含定时文本的源文件。
The <video> HTML element embeds a media player which supports video playback into the document. You can use <video> for audio content as well, but the <audio> element may provide a more appropriate user experience.
或者:零个或多个<source>元素,其后紧跟零个或多个<track>元素,其后紧跟不包含<audio>或者<video>媒体元素的透明内容。 标记省略 不允许,开始标签和结束标签都不能省略。 允许的父级元素任何允许 嵌入内容 的元素. DOM 接口HTMLAudioElement 属性 该元素包含全局属性。
It is a Structured Header whose value is a token with possible values audio, audioworklet, document, embed, empty, font, image, manifest, object, paintworklet, report, script, serviceworker, sharedworker, style, track, video, worker, and xslt. The following request headers are not strictly ...
Similar functionality can be achieved in some versions of Netscape using the<embed>tag to invoke an audio player. You can write bgsound with a self-closing tag<bgsound />. However, since this element is not part of a standard, making it XHTML-like will not make it validate. ...
TheX-Robots-TagHTTP header is used to indicate how a web page is to be indexed within public search engine results. The header is effectively equivalent to<meta name="robots" content="…">. Deprecated headers PragmaDeprecated Implementation-specific header that may have various effects anywhere ...
The <audio> HTML element is used to embed sound content in documents. It may contain one or more audio sources, represented using the src attribute or the <source> element: the browser will choose the most suitable one. It can also be the destination for
<portal> Enables the embedding of another HTML page into the current one to enable smoother navigation into new pages. <source> Specifies multiple media resources for the picture, the audio element, or the video element. It is a void element, meaning that it has no content and does not hav...
The <source> HTML element specifies one or more media resources for the <picture>, <audio>, and <video> elements. It is a void element, which means that it has no content and does not require a closing tag. This element is commonly used to offer the same