var numbers = {  

  array: [3, 5, 10],

  getNumbers: function() {

    return this.array;    

  }

};

// Create a bound function

var boundGetNumbers = numbers.getNumbers.bind(numbers);  

console.log(boundGetNumbers()); // => [3, 5, 10]  

// Extract method from object

var simpleGetNumbers = numbers.getNumbers;  

console.log(simpleGetNumbers()); // => undefined or throws an error in strict mode