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HTML preload 属性


定义和用法

The preload 属性指定作者认为在页面加载时如何加载媒体文件。

The preload 属性允许作者向浏览器提供一个提示,告诉浏览器他/她认为哪种方式能带来最佳的用户体验。此属性在某些情况下可能会被忽略。

注意: 如果存在自动播放,则 preload 属性将被忽略。


适用范围

The preload 属性可用于以下元素

元素 属性
<audio> preload
<video> preload

示例

音频示例

作者认为在页面加载时不应加载声音

<audio controls preload="none">
  <source src="horse.ogg" type="audio/ogg">
  <source src="horse.mp3" type="audio/mpeg">
  您的浏览器不支持音频元素。
</audio>
自己试试 »

视频示例

作者认为在页面加载时不应加载视频

<video controls preload="none">
  <source src="movie.mp4" type="video/mp4">
  <source src="movie.ogg" type="video/ogg">
  您的浏览器不支持视频标签。
</video>
自己试试 »

浏览器支持

The preload 属性对每个元素具有以下浏览器支持

元素
audio 4.0 9.0 4.0 4.0 10.5
video 4.0 不支持 4.0 4.0 10.5

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