javascript - Autoplay HTML5 audio/video in iOS5

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javascript - Autoplay HTML5 audio/video in iOS5

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深蓝 · Answer 1 · 2021-10-23T19:38:24+0000

Absurb, but you have to see it from iPhone or any mobile phone's point of view. It is a mobile phone going over a cellular network with bandwidth limitations, which many people know about from the recent Sprint commercial. They do not want users going over their bandwidth limit because some site is sending their phone a large amount of data without them taking action themselves.

The following is an excerpt from the official Safari Developer Library with more details.

User Control of Downloads Over Cellular Networks

In Safari on iOS (for all devices, including iPad), where the user may be on a cellular network and be charged per data unit, preload and autoplay are disabled. No data is loaded until the user initiates it. This means the JavaScript play() and load() methods are also inactive until the user initiates playback, unless the play() or load() method is triggered by user action. In other words, a user-initiated Play button works, but an onLoad="play()" event does not.

This plays the movie: <input type="button" value="Play" onClick="document.myMovie.play()">

This does nothing on iOS: <body onLoad="document.myMovie.play()">

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javascript - Autoplay HTML5 audio/video in iOS5

javascript - Autoplay HTML5 audio/video in iOS5

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