javascript - Javascript 中的嵌套函数

Question

我想要一个这样的 JavaScript block ，但这似乎无效。

MYAPP.audioRecording = {

  var navigator = window.navigator;
  var Context = window.AudioContext || window.webkitAudioContext;
  var context = new Context();

  navigator.getUserMedia = (
    navigator.getUserMedia ||
    navigator.webkitGetUserMedia ||
    navigator.mozGetUserMedia ||
    navigator.msGetUserMedia
  );

  function startRecorder() {
     //start recording code
  }

  function stopRecorder() {
     //recorder stop    
  }

}

然后我想从另一个代码块调用 startRecorder() 和 stopRecorder() 函数。

MYAPP.recordingManager = {

  MYAPP.audioRecording.startRecorder();
  MYAPP.audioRecording.stopRecorder();

}

非常感谢您提供的任何帮助。谢谢!

Answer 1

MYAPP.audioRecording = (function() {

    var navigator = window.navigator;
    var Context = window.AudioContext || window.webkitAudioContext;
    var context = new Context();

    navigator.getUserMedia = (
        navigator.getUserMedia ||
        navigator.webkitGetUserMedia ||
        navigator.mozGetUserMedia ||
        navigator.msGetUserMedia
    );

    return {
        startRecorder: function() {
            //start recording code
        },
        stopRecorder: function() {
            //recorder stop    
        }
    }

})();