I have the following object literal:

{ 

  'key1': 

  { 

    id: 'rr323',

    d: undefined,

    x: 560,

    y: 150 

  },

  'key2': 

  { 

    id: 'rr231',

    d: undefined,

    x: 860,

    y: 90 

  } 

}

I want to implement an if statement such as below:

if(key DOES NOT exist in object){  

//perform certain function 

}

I tried the following:

var key = key1;

if(!(key in global_move_obj)){

 // function

}

But that always returns true value when it should return false.