HTMLMediaElement.duration

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.

HTMLMediaElement.duration 属性以秒为单位给出媒体的长度，如果没有媒体数据可用，则为零。

语法

js
var myDuration = audioOrVideo.duration;

值

如果媒体数据可用但长度未知，则此值为 NaN。如果媒体流式传输且没有预定义长度，则值为 Inf。

例子

js
var obj = document.createElement("video");
console.log(obj.duration); // NaN

规范

Specification
HTML Standard
# dom-media-duration-dev

浏览器兼容性

BCD tables only load in the browser

参见