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HTML 音频/视频 DOM duration 属性

❮ HTML 音频/视频 DOM 参考

示例

获取当前视频的长度

let vid = document.getElementById("video1");
alert(vid.duration);
尝试一下 »

定义和用法

duration 属性以秒为单位返回当前音频/视频的长度。

如果没有设置音频/视频,则返回 NaN(非数字)。

注意:此属性是只读的。


浏览器支持

表中的数字指定完全支持该属性的第一个浏览器版本。

属性
duration 9.0 3.5

语法

audio|video.duration

技术细节

返回值 一个数字,表示视频的长度,以秒为单位。如果没有设置视频,则返回“NaN”(非数字)。如果视频是流式传输的并且没有预定义的长度,则返回“Inf”(无穷大)。

❮ HTML 音频/视频 DOM 参考
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