Heads up! To view this whole video, sign in with your Courses account or enroll in your free 7-day trial. Sign In Enroll

Practice Object Literals in JavaScript

Preview

Start a free Courses trial
to watch this video

Sign up for Treehouse

Introducing the Practice

2:49 with Dave McFarland

Practice creating JavaScript object literals by tackling three small projects. In this video, learn how to open the projects, and what you need to do to complete them successfully.

Using the practice files

Use the workspace attached to this video to complete the project, or download the project files. If you wish to download the files and work on this project with your own text editor on your computer, you'll also need to install Node to test your solution.

Installing Node

Related Discussions

Have questions about this video? Start a discussion with the community and Treehouse staff.

Sign up

    Related Discussions

    Have questions about this video? Start a discussion with the community and Treehouse staff.

    Sign up

    [MUSIC] 0:00
    Hey everyone, Dave here. 0:04
    Practice is a good thing. 0:05
    It helps make what you've learned last longer. 0:07
    It also helps you become a faster and better developer. 0:10
    So let's practice some basic JavaScript to make sure your knowledge sticks. 0:13
    This practice session covers working with basic object notation in JavaScript. 0:17
    It's a great followup to the third part of the JavaScript's loops, arrays, and 0:21
    objects course. 0:26
    If you haven't taken that yet and find this practice session too difficult, 0:27
    then go through the course first, I've added a link in the teacher's notes. 0:30
    You'll work on three different small projects. 0:34
    I've attached a workspace to this video, go ahead and open it up. 0:37
    The first project is to find in the 1_object.js file. 0:40
    You'll use object literal syntax to create a simple object and use a for 0:46
    in loop to print the properties and values of the object to the console. 0:51
    Instructions for this project are in the file. 0:55
    Just open up that file and follow the step-by-step instructions. 0:58
    You'll use the workspace console to run your code using node. 1:02
    When you're done, you should see output like this. 1:09
    The second project is defined in the 2_ product.js file. 1:16
    It asks you to create a new object named product with three properties for 1:22
    a single product. 1:26
    A name, the number of items in the inventory for that product, 1:28
    and the unit price, which is the cost of a single product. 1:31
    For example, there might be five chairs in stock each costing $45. 1:34
    You'll next create a couple of functions. 1:39
    One to add items to the inventory and another to process a sale. 1:43
    The steps are described in the file. 1:45
    The output of the program should look something like this. 1:48
    The last project is described in the 3_final products.js file and 1:59
    requires that you create an array of objects. 2:04
    You'll add two functions, one to return a list of the names of all the products, and 2:07
    another to calculate the total value of all the products in the array. 2:12
    When you run the program. 2:16
    Your output should look like this. 2:20
    This is a pretty challenging set of projects. 2:25
    If you wanna do some quick study before tackling this practice session, look in 2:27
    the teacher's notes for links to videos that can help you solve this challenge. 2:31
    But if you're ready to go, go for it. 2:35
    If you're having trouble, keep at it. 2:37
    The more your brain works, the more you'll learn. 2:39
    But if you just can't figure out one or more of these, 2:42
    jump to the next video to show you how I programmed the solution. 2:45

    You need to sign up for Treehouse in order to download course files.

    Sign up

      You need to sign up for Treehouse in order to set up Workspace

      Sign up