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

Calling a function requires the () because they are the function invocation operator. To execute a function you will always need to include parentheses.

When you call ambes.add you are returning the function object itself. If you do so inside console.log() or concatenate it onto a string JavaScript will return the function definition as a complete string which explains the first output you receive.