Heads up! To view this whole video, sign in with your Courses account or enroll in your free 7-day trial. Sign In Enroll
Preview
Start a free Courses trial
to watch this video
Try out the `addPatron()` and `addBooks()` methods we wrote in this demo.
Great work on creating the add book and
0:00
add patron methods inside
the library class.
0:02
In this video we're going
to test out these methods.
0:05
We'll call them on our library object, and
0:07
then use Chrome's dev tools to take a look
at how that library object has changed.
0:09
You'll notice I attached another
work space to this video.
0:13
This new one has
the completed add book and
0:16
add patron methods added
to the library class.
0:18
Open up the work space and
let's get started.
0:21
I'm gonna head to my index.html file.
0:24
The book, patron and library objects
we created previously are still there.
0:27
We'll use these objects now.
0:31
Since we already have a book
object created, we can try
0:33
adding it to the library objects book
property using our new addBook method.
0:36
So let's call the method
on our library object.
0:41
Don't forget we have to pass in the book
object we're adding to the addBook method.
0:46
Now let's log the library object to the
console to see if the book object is now
0:52
in the book's array.
0:56
Let's save and check out the console.
1:02
Perfect.
1:10
Our library object is here.
1:10
Let's click this little
arrow to see what's inside.
1:12
We can see the books and
patrons properties each on their own line.
1:15
And it looks like the book object was
successfully added to the book's property.
1:19
Let's click this arrow
to look more closely.
1:24
Yep, we can see all the correct
data is here, that's great.
1:26
Let's head back to the work space and
do the same with our add patron method.
1:29
I'll call the method to add patron right
under the method call to add book.
1:33
Now I'll save and preview again.
1:44
Let's click into the library object.
1:47
It looks like something has
populated the patrons property.
1:49
If we dial down into it,
1:52
we can see the patron object with
the correct properties and values.
1:53
You need to sign up for Treehouse in order to download course files.
Sign up