AudioContext.close()

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close() 方法在 AudioContext Interface closes the audio context, releasing any system audio resources that it uses.

Closed contexts cannot have new nodes created, but can decode audio data, create buffers, etc.

This function does not automatically release all AudioContext -created objects, unless other references have been released as well; however, it will forcibly release any system audio resources that might prevent additional AudioContexts from being created and used, suspend the progression of audio time in the audio context, and stop processing audio data. The returned Promise resolves when all AudioContext -creation-blocking resources have been released. This method throws an INVALID_STATE_ERR exception if called on an OfflineAudioContext .

句法

var audioCtx = new AudioContext();
audioCtx.close().then(function() { ... });
await audioCtx.close();

A Promise that resolves with void.

范例

The following snippet is taken from our AudioContext states demo ( see it running live .) When the stop button is clicked, close() is called. When the promise resolves, the example is reset to its beginning state.

stopBtn.onclick = function() {
  audioCtx.close().then(function() {
    startBtn.removeAttribute('disabled');
    susresBtn.setAttribute('disabled', 'disabled');
    stopBtn.setAttribute('disabled', 'disabled');
  });
}

规范

规范	状态	注释
Web 音频 API The definition of 'close()' in that specification.	工作草案

浏览器兼容性

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
`close`	Chrome 42	Edge 14	Firefox 40	IE 不支持 No	Opera Yes	Safari Yes	WebView Android 43	Chrome Android 43	Firefox Android 40	Opera Android Yes	Safari iOS Yes	Samsung Internet Android 4.0

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