Topics discussed in class this week:
• Capturing user input
• Events
• Basic DOM manipulations (img src, innerHTML)
• Code debugging using the browser
• Code commenting
• Structuring code files
• Code formatting
• Handing in homework via PR
Here you find the readings you have to complete before the second lecture.
Give yourself (or your neighbor) a little tap on the shoulder, you've made it to JS2! 💪
Deadline Thursday evening
Modify the (mostly empty) files in the Week1/homework folder for this step.
1.1 Open the apps.js and start by declaring an array that contains 10 strings. These strings should be of book titles you have read (or made up) and be lowercase without spaces so that you can use these later as HTML id attributes. (Example: Harry Potter's - The Chamber of Secrets -> harry_potter_chamber_secrets). Add a console.log statement to output this array to console. (This is for debugging and making sure everything is in order. Delete it later when you're done :))
1.2 Open the empty index.html and add the required HTML to load the app.js file. Open index.html in the browser and confirm that the console.log statement shows the array. (Open the Chrome Developer Tools and inspect the console.)
1.3 Remove the temporary console.log from step 1.1. Make a function (or functions) that generate a ul with li elements for each book ID in the array using a for loop. Make sure that the function names you choose are an accurate reflection of what they do. As a reminder, here are the recommended Naming Conventions.
1.4 Make an object (not an array!) containing information for each book. Each property of this object should be another (i.e., nested) object with the book ID you thought up in step 1.1 as a key, and at least the following properties: title, language and author.
1.5 Now change the function from step 1.3 that you used to display the book ID's in a list to take the actual information about the book from the object and display that. Make sure you choose the correct HTML elements for each piece of info, for instance, a heading for the title.
1.6 Beautify your html page with css (use the style.css file for that), add sources and alts to each of the images.
1.7 Find and download book covers for each book and construct a new object which has as keys the book IDs again, and as value the path to the image source (e.g. { harry_potter_blabla: './img/harry_potter_blabla.jpg', ... }).
1.8 Loop over these entries (hint: Object.keys(objectName) gives you an array containing the keys). Then write a function which places an image at the corresponding li element. Remember that objects are not ordered, so you cannot guarantee that the first key is the first li element. (Hint: you could give each li item an id tag by modifying the function you made before.)
Go over your homework one last time:
- Does your JavaScript file start with
'use strict';? - Do the variable, function and argument names you created follow the Naming Conventions?
- Have you resolved all issues flagged by ESLint and the spell checker (no wavy red and green underlines in VSCode)?
If the answer is 'yes' to all preceding questions you are ready to follow these instructions:
Deadline Sunday morning
Use a Constructor to Create Objects
And just for fun ... Sum All Numbers in a Range
Deadline Sunday morning
Go trough the reading material in the README.md to prepare for your next class
the Bonus homework for this week (for those of you want an extra challenge) do the following:
- Sign up on codewars.com
- In you account setting under “clan” write “Hack Your Future”
- Go do the challenges in the following playlist: https://www.codewars.com/collections/fun-fun-fundamentals
Codewars is really a lot of fun, and you can compete against each other who has the most points 
it’s a great way to really practice JavaScript a lot in various problems.
Please note, there are various challenges all sorted on difficultly called KIU. Kiu 8 is the easiest, Kiu 1 is the hardest, we expect you to do challenges around level 8, 7 maybe.
Enjoy!