在AngularJS中检测耳机是否已连接

navigator.getUserMedia = navigator.getUserMedia || navigator.webkitGetUserMedia || navigator.mozGetUserMedia;

// 检测耳机是否已连接
function checkHeadphonesConnection() {
  navigator.getUserMedia({ audio: true }, function(stream) {
    var audioTracks = stream.getAudioTracks();
    if (audioTracks.length === 0) {
      console.log('耳机未连接');
    } else {
      console.log('耳机已连接');
    }
    // 关闭音视频流
    stream.getTracks().forEach(function(track) {
      track.stop();
    });
  }, function(error) {
    console.error('获取音频流失败: ', error);
  });
}

// 调用检测耳机连接函数
checkHeadphonesConnection();