Node.js-管理回调之间javascript作用域的更好方法？

我正在使用Node.JS，有两个对象通过回调在它们之间移动。我提出了一个解决方案来维护对正确对象的范围引用。我想知道是否有更好的方法，或者这是一个好的做法

function Worker () {}

Worker.prototype.receiveJob = function(callback, bossReference) {
  this.doJob(callback, bossReference);
};

Worker.prototype.doJob = function(callback, bossReference) {
  callback.call(bossReference);
  // callback(); // this will not work
};

function Boss () {
  this.worker = new Worker();
}

Boss.prototype.delegateJob = function() {
  this.worker.receiveJob(this.whenJobCompleted, this);
};

Boss.prototype.whenJobCompleted = function() {
  this.sayGoodJob();
};

Boss.prototype.sayGoodJob = function() {
  console.log('Good job');
};

var boss = new Boss();
boss.delegateJob();

---

使用

Function.prototype.bind（）

你不需要那些愚蠢的

bossReference

s后缀，除非你在函数中需要它

function Worker () {}

Worker.prototype.receiveJob = function(callback) {
  this.doJob(callback);
};

Worker.prototype.doJob = function(callback) {
  callback()
};

function Boss () {
  this.worker = new Worker();
}

Boss.prototype.delegateJob = function() {
  this.worker.receiveJob(this.whenJobCompleted.bind(this));
};

Boss.prototype.whenJobCompleted = function() {
  this.sayGoodJob();
};

Boss.prototype.sayGoodJob = function() {
  console.log('Good job');
};

var boss = new Boss();
boss.delegateJob();