如何检测在JavaScript中是否插入了耳机？ [英] How to detect whether a headphone is inserted or removed in JavaScript?

问题描述

JavaScript中是否有任何事件，我可以在浏览器中收听，通过它我们可以知道是否插入或卸下了耳机？

Is there any event in JavaScript, I can listen to in browser, through which we can know whether headphones are inserted or removed?

我假设我们能够遍历JavaScript中的音频输出设备，是否有可能减少音频输出设备的数量？

I assume if we are able to iterate over devices of audio output in JavaScript, is there a possibility, we can deduct the change in the number of audio output devices?

推荐答案

您可以使用以下内容： https：//developer.mozilla .org / zh-CN / docs / Web / API / MediaDevices

You can use the following: https://developer.mozilla.org/en-US/docs/Web/API/MediaDevices

示例：

navigator.mediaDevices.addEventListener('devicechange', () => {
  // Do whatever you need to with the devices
  // Maybe use enumerateDevices() to see what connected
});

您可以从以下位置检查已连接的设备，也可以在 devicechange上调用它：

You could check the devices already connected from the following or call it on devicechange:

navigator.mediaDevices.enumerateDevices()
  .then(devices => {
    // Check the connected devices
    console.log(devices);  
  });

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