I'm a JS newbie and am struggling to understand how to get the value out of an object when using a for in loop. Could you all share your knowledge with me please. Thanks! 

Here's my problem, the code below just logs the properties and I'm trying to use a for-in loop to find if an object contains the value "apple" 

```
var mac = {
    company: 'apple',
    product: 'iPhone',
    price: 300
};

for (var key in mac) {
  console.log(key);
}

```