HTML5 is likely to put an end to audio plug-in such as Microsoft Windows Media player, Microsoft Silverlight, Apple QuickTime and the infamous Adobe Flash. ≫ 要素 ≫ 埋め込みコンテンツ ≫ audio要素 ≫ autoplay属性 autoplay属性.

It can also be the destination for streamed media, using a MediaStream. If you don’t set autoplay, the spec says that browsers will only download the audio metadata (to find out the length, for example) but will not download the audio itself. Audio is subject to CORS and unless you allow it on the server side, an audio file can’t be played cross-origin.

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. Preloading the audio. The HTML "autoplay "attribute is a "boolean" attribute and specifies that the audio or video will start playing automatically as soon as possible.. You can use this attribute on the following elements: