Calling a function without parentheses returns whole function as a string

Question

I created a JavaScript object like this:

var obj = {
  a: 10,
  b: 20,
  add: function(){
     return this.a + this.b;
  }
};

I executed the

Answer 1

You didn't execute the function with obj.add, you only looked it up in the object and the environment you're in happened to render the function as a string. You execute it by adding the parentheses.