javascript从孩子调用父方法

Question

I have the following object:

var party =
{
   food:
   {
       serve: function () {
         // I want to call turnOff method from here
       }

       cleanUp: function () {
       }
   }

   music:
   {
       turnOff: function () {
       }
   }
}

So as the comment points out, I want to call the turnOff method from the music object, how can I do this? this refers to the food object but I need to access the music object...

Answer 1

Use a constructor instead of a literal with a variable referencing the parent object

var party = new (function()
{
   var self = this;
   this.food =
   {
       serve: function () {
           self.music.turnoff();
       },

       cleanUp: function () {
       }
   }

   this.music = 
   {
       turnOff: function () {
       }
   }
})();

Answer 2

var party =
{
   food:
   {
       serve: function () {
         party.music.turnOff();
       },
       cleanUp: function () {
       }
   },
   music:
   {
       turnOff: function () {
       }
   }
}

Answer 3

Call it as party.music.turnOff ().

FYI, your above code block isn't valid. You're missing some commas - after the serve and food closing braces.