MediaStreamTrackEvent()

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MediaStreamTrackEvent() constructor returns a newly created MediaStreamTrackEvent object, which represents an event announcing that a MediaStreamTrack has been added to or removed from a MediaStream .

var trackEvent = new MediaStreamTrackEvent(type, {track: aMediaStreamTrack});

MediaStreamTrackEvent() constructor also inherits arguments from Event() .

type: DOMString representing the name of the type of the MediaStreamTrackEvent . It is case-sensitive and can be " addtrack " or " removetrack " .
track: MediaStreamTrack object representing the track which was added to or removed from the stream.

新的 MediaStreamTrackEvent , initialized based on the provided options.

规范	状态	注释
媒体捕获和流 The definition of 'MediaStreamTrackEvent()' in that specification.	候选推荐

The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. 更新 GitHub 上的兼容性数据

	桌面						移动
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
`MediaStreamTrackEvent()` 构造函数	Chrome 55	Edge ≤79	Firefox 50	IE No	Opera 42	Safari ?	WebView Android 55	Chrome Android 55	Firefox Android 50	Opera Android 42	Safari iOS ?	Samsung Internet Android 6.0