WDI Fundamentals

WDI Fundamentals Unit 10

Unit 10 Assignment

Our memory card game is starting to take shape! Now that we've covered objects we have a better way to represent our cards. For example, maybe we want to associate a suit with a card or store a path to where the image for that card's face is stored. We'll work on adding this functionality in this assignment.



For this unit's assignment, you will be creating an object for each card that will store that card's name, the suit, and a path to where the image for that card is stored in our project.

You'll then update any code from the last assignment that was accessing values from the cards array so that we are accessing values from that specific card object.


  1. First let's add some extra information to each card by storing an object for each card in our cards array. Open the memory_game folder in Sublime, then open the main.js file you worked on in the last assignment and complete the following steps:

    • Delete the four strings from the cards array.
    • In the cards array, create four objects, one for each card.

      Hint: Here's the syntax for creating an array that contains objects:

      var myArray = [
             color: 'red',
             flower: 'rose',
             petals: 20
             color: 'blue',
             flower: 'violet',
             petals: 6
    • Here is what each object should look like:
rank suit cardImage
"queen" "hearts" "images/queen-of-hearts.png"
"queen" "diamonds" "images/queen-of-diamonds.png"
"king" "hearts" "images/king-of-hearts.png"
"king" "diamonds" "images/king-of-diamonds.png"

2. Now that we have our card objects, we'll want to update lines of code where we were accessing values from the cards array to reflect these changes.

  • In the flipCard function, find this console.log statement: console.log("User flipped " + cards[cardId]);
  • Update the portion cards[cardId]. Right now, this code is accessing the entire first object in the cards array. You'll want to update this code so that we are accessing the rank property of this object.

Hint: We'll give you this one, and you can use this as a reference for the next two steps. Update this to cards[cardId].rank.

  • Next update the cards[cardId] portion of cardsInPlay.push(cards[cardId]);. You'll want to push the name of the card ("queen" or "king") to the cardsInPlay array.

Hint: You'll want to use the rank property like we did in the last step.

  • Now let's add a bit of new code so that we can "see" the cards that are flipped in our console. Add two console.log() statements. One should log the cardImage and the other should log the suit for the flipped card.

3. Save your main.js file, open the project in Chrome and open the console. Make sure that the "User flipped queen" and "User flipped king" messages are still displayed. You should now also see the image paths and suits displayed.


Here's what your console should display:

Here's what the alert that pops up should display:

Pushing Code Up to the Repository

In order to back up your code and track your work, you'll want to commit the changes you've made to the project's repository. You'll have to open up the terminal and cd into the correct folder that holds the cloned repository for this assignment. Once you're there, complete these three steps:

  1. Stage your code.

    git add -A

  2. Create a version of your staged code.

    git commit -m 'created game logic'

  3. Push your code to the GitHub repository.

    git push origin master

Onto Unit 11!