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HTML onloadedmetadata 属性


定义和用法

loadedmetadata 事件在指定音频/视频的元数据加载完毕时发生。

音频/视频的元数据包括:时长、尺寸(仅限视频)和文本轨道。

在加载音频/视频的过程中,以下事件按顺序发生:

  1. loadstart
  2. durationchange
  3. loadedmetadata
  4. loadeddata
  5. progress
  6. canplay
  7. canplaythrough

适用对象

onloadedmetadata 属性是 事件属性 的一部分,可以在以下元素上使用

元素 事件
<audio> loadedmetadata
<video> loadedmetadata

示例

音频示例

加载 loadedmetadata 事件时运行 "myFunction"

<audio onloadedmetadata="myFunction()">
亲自尝试 »

视频示例

加载 loadedmetadata 事件时运行 "myFunction"

<video onloadedmetadata="myFunction()">
亲自尝试 »

浏览器支持

每个元素的 onloadedmetadata 属性具有以下浏览器支持

元素
音频 9.0
视频 9.0

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