title: The return value of javascript methods
body: <pre><code>var john = { 
      fullName: "John Smith",
      age: 30,
      mass: 68, 
      height: 179,
      calcBMI: function() {
        this.mass / this.height;
      }
  };                                                                              
  
  console.log(john.calcBMI);
  </code></pre>
  
  <p>When I run the <code>console.log</code> method get return value of</p>
  
  <pre><code>[Function: calcBMI]
  </code></pre>
  
  <p>I expected an float object. I don't know where to start to fix this. I want the method calcBMI to return the mass of john / the height of john.
  I also tried the key word <code>return</code></p>