HackYourFuture · nabudaldah · Aug 5, 2020
diff --git a/Week1/exercise01.js b/Week1/exercise01.js
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+'use strict'
+
+/*
+
+Exercise 1: Hello world!
+
+Write a statement, using the console.log() function. It should fulfill the following requirements:
+
+It takes a string as an argument
+The string should contain the message "Hello world!"
+Execute the function 10 times, each time using the phrase in different languages
+For example:
+
+Halo, dunia! // Indonesian
+Ciao, mondo! // Italian
+Hola, mundo! // Spanish
+Finished? Using the command line, navigate to your js-exercises folder and type in the following to test your code:
+
+foo@bar:~$ node exercise01.js
+Expected output: It should show the message Hello world! in 10 different languages.
+
+*/
+
diff --git a/Week1/exercise02.js b/Week1/exercise02.js
@@ -0,0 +1,21 @@
+'use strict'
+
+/*
+
+Exercise 2: Error debugging
+
+Consider the following code:
+
+console.log('I'm awesome'!;
+Here are the requirements:
+
+Copy the code in your .js file and run it in the command line using node.
+You will see that you will get a SyntaxError.
+
+Correct the mistake.
+Hint: the SyntaxError message will give you some indication of what the error might be, but figure out yourself how to correct it!
+
+Expected output: When done right, the command line should show the message I'm awesome!.
+
+*/
+
diff --git a/Week1/exercise03.js b/Week1/exercise03.js
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+'use strict'
+
+/*
+
+Exercise 3: Log the number
+
+Follow the steps. Make sure that each step is written on the line after.
+
+First, declare your variable numberX. Do not initialize it (which means, don't give it a starting value) yet
+Add a console.log statement that explains in words what you think the value of x is
+Add a console.log statement that logs the value of numberX.
+Now initialize your variable numberX with a number (also called an integer in computer science terms)
+Next, add a console.log statement that explains what you think the value of numberX is
+Add a console.log statement that logs the value of numberX
+
+*/
+
diff --git a/Week1/exercise04.js b/Week1/exercise04.js
@@ -0,0 +1,17 @@
+'use strict'
+
+/*
+
+Exercise 4: Log the string
+
+Follow the steps. Make sure that each step is written on the line after.
+
+Declare a variable myString and assign a string to it. Use your full name, including spaces, as the content for the string.
+Write a console.log statement in which you explain in words what you think the value of the string is.
+Now console.log the variable myString.
+Now reassign to the variable myString a new string.
+Just like what you did before write a console.log statement that explains in words what you think will be logged to the console.
+Now console.log myString again.
+
+*/
+
diff --git a/Week1/exercise05.js b/Week1/exercise05.js
@@ -0,0 +1,17 @@
+'use strict'
+
+/*
+
+Exercise 5: Round a number and log it
+
+Follow the steps. Make sure that each step is written on the line after.
+
+Declare a variable z and assign the number 7.25 to it.
+Write a console.log statement in which you log the value of z.
+Declare another variable a that has the value of z but rounded to the nearest integer.
+Write a console.log statement in which you log the value of a.
+So now we have z and a find a way to compare the two values and store the highest of the two in a new variable.
+Write a console.log statement in which you log the value of the highest value.
+
+*/
+
diff --git a/Week1/exercise06.js b/Week1/exercise06.js
@@ -0,0 +1,18 @@
+'use strict'
+
+/*
+
+Exercise 6: Log an array of animals
+
+Follow the steps. Make sure that each step is written on the line after.
+
+Declare variable and assign to it an empty array. Make sure that the name of the variable indicates it contains more than 1 item. For example items instead of item.
+Write a console.log statement that explains in words what you think the value of the array is.
+Write a console.log statement that logs the array.
+Create a new variable with an array that has 3 of your favorite animals, each in a different string. Make sure the name of the variables says something about what the variable contains.
+Write a console.log statement that logs the second array.
+Add a statement that adds another string ("Piglet)" to the array of animals.
+Write a console.log statement that logs the second array!
+
+*/
+
diff --git a/Week1/exercise07.js b/Week1/exercise07.js
@@ -0,0 +1,14 @@
+'use strict'
+
+/*
+
+Exercise 7: Log the length of a string
+
+Follow the steps. Make sure that each step is written on the line after.
+
+Declare a variable called mySentence and initialize it with the following string: "Programming is so interesting!".
+Figure out (using Google) how to get the length of mySentence.
+Write a console.log statement to log the length of mySentence.
+
+*/
+
diff --git a/Week1/exercise08.js b/Week1/exercise08.js
@@ -0,0 +1,36 @@
+'use strict'
+
+/*
+
+Exercise 8: Type checker
+
+Create a function that fulfills the following requirements:
+
+Takes in 2 arguments
+Check the data type of each
+Compares each data type
+Logs to the console the message SAME TYPE if they are the same type. If they are different types log Not the same....
+Follow the steps:
+
+Declare 4 variables: 2 must be strings and 2 must be objects
+Create 6 conditional statements, where for each you check if the data type of one variable is the same as the other
+Find out how to check the type of a variable
+Write 2 console.log statements to log the type of 2 variables, each with a different data type
+Now compare the types of your different variables with one another
+Log Not the same... when the types are different
+Here's an incomplete example of how it could look:
+
+// Declare all variables
+let x = 9;
+let y = 67;
+
+// Check data type
+console.log(...);
+
+// Check if data type is the same
+if (...) {
+    console.log('SAME TYPE');
+}
+
+*/
+
diff --git a/Week1/exercise09.js b/Week1/exercise09.js
@@ -0,0 +1,14 @@
+'use strict'
+
+/*
+
+Exercise 9: Log the remainder
+
+Answer the following questions. For each, write in comments what the answer is followed by how you came to that conclusion:
+
+If x equals 7, and the only other statement is x = x % 3, what would be the value of x after the calculation?
+If y equals 21, and the only other statement is y = y % 4, what would be the value of y after the calculation?
+If z equals 13, and the only other statement is z = z % 2, what would be the value of z after the calculation?
+
+*/
+
diff --git a/Week1/exercise10.js b/Week1/exercise10.js
@@ -0,0 +1,17 @@
+'use strict'
+
+/*
+
+Exercise 10: Compare arrays
+
+Follow the steps:
+
+Declare 2 variables, that each hold an array. The first array should have 4 items, the second 7 items
+Find out how to get the length of each array. Write a console.log statement that shows the length of each array
+const array = ["hello", 123, true, { name: "Noer" }];
+
+console.log('The length of the array is...' + ...);
+Write a conditional statement that checks if both are of equal length. If they are, log to the console They are the same!, if not log Two different sizes
+
+*/
+
diff --git a/Week2/exercise01.js b/Week2/exercise01.js
@@ -0,0 +1,19 @@
+'use strict'
+
+/*
+
+Exercise 1: Remove the comma
+
+Consider the following string:
+
+let myString = 'hello,this,is,a,difficult,to,read,sentence';
+Follow the steps:
+
+Add the variable to your file.
+Log the length of myString.
+The commas make that the sentence is quite hard to read. Find a way to remove the commas from the string and replace them with spaces. (use Google!)
+After replacing the commas, log myString to see if you succeeded.
+Expected result in the console: hello this is a difficult to read sentence
+
+*/
+
diff --git a/Week2/exercise02.js b/Week2/exercise02.js
@@ -0,0 +1,15 @@
+'use strict'
+
+/*
+
+Exercise 2: The even/odd reporter
+
+Report whether or not a number is odd/even!
+
+Create a for loop, that iterates from 0 to 20.
+Create a conditional statement that checks if the value of the counter variable is odd or even.
+If it's odd, log to the console The number [PUT_NUMBER_HERE] is odd!.
+If it's even, log to the console The number [PUT_NUMBER_HERE] is even!.
+
+*/
+
diff --git a/Week2/exercise03.js b/Week2/exercise03.js
@@ -0,0 +1,19 @@
+'use strict'
+
+/*
+
+Exercise 3: The recipe card
+
+Ever wondered how to make a certain meal? Let's create a recipe list with JavaScript!
+
+Declare a variable that holds an empty object literal (your meal recipe).
+Give the object 3 properties: a title (string), a servings (number) and an ingredients (array of strings) property.
+Log each property out separately, using a loop (for, while or do/while)
+Expected result:
+
+Meal name: Omelette
+Serves: 2
+Ingredients: 4 eggs, 2 strips of bacon, 1 tsp salt/pepper
+
+*/
+
diff --git a/Week2/exercise04.js b/Week2/exercise04.js
@@ -0,0 +1,18 @@
+'use strict'
+
+/*
+
+Exercise 4: The reading list
+
+Keep track of which books you read and which books you want to read!
+
+Follow the steps:
+
+Declare a variable that holds an array of 3 objects, where each object describes a book and has properties for the title (string), author (string), and alreadyRead (boolean indicating if you read it yet).
+Loop through the array of books.
+For each book, log the book title and book author like so: "The Hobbit by J.R.R. Tolkien".
+Create a conditional statement to change the log depending on whether you read it yet or not. If you read it, log a string like You already read "The Hobbit" right after the log of the book details
+If you haven't read it log a string like You still need to read "The Lord of the Rings"
+
+*/
+
diff --git a/Week2/exercise05.js b/Week2/exercise05.js
@@ -0,0 +1,24 @@
+'use strict'
+
+/*
+
+Exercise 5: Who wants a drink?
+
+You're at a party and you feel thirsty! However, you've got 5 friends who are also in need of a drink. Let's go get them a drink.
+
+Declare a variable that holds an empty array, called drinkTray.
+There are 3 different types of drinks:
+
+const drinkTypes = ['cola', 'lemonade', 'water'];
+Create a loop that runs 5 times. On each iteration, push a drink into the drinkTray variable. The drinkTray can only hold at most two instances of the same drink type, for example it can only hold 2 colas, 2 lemonades, 2 waters.
+// Expected result:
+const drinkTray = ['cola', 'cola', 'lemonade', 'lemonade', 'water'];
+
+// 'Hey guys, I brought a cola, cola, lemonade, lemonade, water!'
+If there are already two instances of a drinkType then start with the next drink in the array.
+Your drinkTray should contain 2 cola, 2 lemonade and 1 water.
+Log to the console: "Hey guys, I brought a [INSERT VALUES FROM ARRAY]!" (For example: "Hey guys, I brought a cola, cola, lemonade, lemonade, water!")
+Test out your code using node in the command line!
+
+*/
+
diff --git a/Week2/project/main.js b/Week2/project/main.js
@@ -0,0 +1,34 @@
+'use strict'
+
+/*
+
+4. PROJECT: Grade calculator
+Every week ends with a project you have to build on your own. Instead of getting clear-cut instructions, you'll get a list of criteria that your project needs to measure up to.
+
+In this project you'll write a function that calculates grades, based on the American grading system! Let's say a student did a test and they got a 60 out of 100, this function will:
+
+convert the score into a percentage
+calculate what grade corresponds with that percentage, and
+shows in the command line the result: the grade and the percentage
+In this example this is what we would expect the function to return in the command line:
+
+You got a D (60%)!
+When writing the function, make use of the following grade scores:
+
+Grade A (90% - 100%)
+Grade B (80% - 89%)
+Grade C (70% - 79%)
+Grade D (60% - 69%)
+Grade E (50% - 59%)
+Grade F (0% - 49%)
+These are the requirements your project needs to fulfill:
+
+Make a JavaScript file with a name that describes its contents
+Use either a switch or if/else statement
+Write at least 2 comments that explain to others what a line of code is meant to do
+Make the return value of the function a template string, so you can insert variables!
+Use node from the command line to test if your code works as expected
+Good luck!
+
+*/
+
diff --git a/Week3/exercise01.js b/Week3/exercise01.js
@@ -0,0 +1,21 @@
+'use strict'
+
+/*
+
+Exercise 1: You are amazing, Noer!
+
+There is no better way to start your day then with a compliment!
+
+Write a function named giveCompliment
+It takes 1 argument: your name
+Inside the function define a variable that holds an array, compliments, with 10 strings. Each string should be a compliment, like "great", "awesome"
+Write code that randomly selects a compliment
+Return a string: "You are [COMPLIMENT], [YOUR_NAME]!
+Call the function three times, giving each function call the same argument: your name.
+// Expected output
+giveCompliment('Noer'); // Returns "You are amazing, Noer!"
+giveCompliment('Noer'); // Returns "You are great, Noer!"
+giveCompliment('Noer'); // Returns "You are supersmart, Noer!"
+
+*/
+
diff --git a/Week3/exercise02.js b/Week3/exercise02.js
@@ -0,0 +1,20 @@
+'use strict'
+
+/*
+
+Exercise 2: Dog years
+
+You know how old your dog is in human years, but what about dog years? Let's calculate it!
+
+Write a function named calculateDogAge.
+It takes 1 argument: your (fictional) puppy's age (number).
+Calculate your dog's age based on the conversion rate of 1 human year to 7 dog years.
+Return a string: "Your doggie is [CALCULATED_VALUE] years old in dog years!"
+Call the function three times with different sets of values.
+// Expected output
+calculateDogAge(1); // Returns "Your doggie is 7 years old in dog years!"
+calculateDogAge(2); // Returns "Your doggie is 14 years old in dog years!"
+calculateDogAge(3); // Returns "Your doggie is 21 years old in dog years!"
+
+*/
+