example.js

var foo = {
  init: function(){
    this.initApple();
    this.initBeta('string');
  },

  initApple: function() {
    console.log("initApple");
    
    var me = this;
    me.loadComments(comments);
  },
  
  initBeta: function(str) {
    console.log("initBeta");
  },
  
  loadComments: function(comments) {
    console.log(comments);
  }
};

foo.init();