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HTML onloadstart 属性


定义和用法

当浏览器开始查找指定的音频/视频时,onloadstart 事件就会发生。这是加载过程开始的时候。

在音频/视频的加载过程中,以下事件按顺序发生

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

适用范围

onloadstart 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> loadstart
<video> loadstart

示例

音频示例

当数据开始加载时运行“myFunction”

<audio onloadstart="myFunction()">
自己尝试 »

视频示例

当数据开始加载时运行“myFunction”

<video onloadstart="myFunction()">
自己尝试 »

浏览器支持

对每个元素,onloadstart 属性具有以下浏览器支持

元素
audio 9.0
video 9.0

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