Assignment
Step 1: Before you start with the assignment
Watch: What is programming?. Just watch the 2 min video, you do not have to do the entire JavaScript course (It could be useful later on though).
If you struggle to do this weeks assignment, read up on JavaScript basics.
Step 2: Javascript warm up part one
Let's get started with some warm up exercises: On freeCodeCamp.com do the Basic JavaScript exercises up and until the "Manipulate Arrays With push()" exercise (there are some topics we did not cover but you can do it).
Please add your freeCodeCamp username as answer for this exercise!
You have finished the warmup exercises, well done!
Step 3: Smart-ease - We help where we can
Enough warm up, let's get to the real problems! We will assume a real world business case where you (the developer) needs to help a business that is starting up (a startup) with solving some of their problems related to JavaScript! Here we go:
Let's imagine that we have just started a cool new tech startup called Smart-ease. And let's imagine we even have this cool website url: smart-ease.io Now we are in business!
At Smart-ease we focus on solving real world problems. We venture into the world to help people, and by helping people, we create a sustainable business.
Cool now let's venture into the world and see which problems we can solve with some of these cool products that Smart-ease will develop with your help:
Age-ify (A future age calculator)
You are talking to a friend who suddenly looks at you and asks: "How old will you be in 2045?" Hmm you remember the year you were born and try to do some calculation: Born in 1987 + 3 that's 1990. 90 - 40 is 50 + 5 that's 58. I will be 58! Wow that was painful! Let's fix that by making some code that automatically does this!
Create two variables called yearOfBirth and yearFuture. Assign these your birth year and a future year. What type will these two variables be? Using yearOfBirth and yearFuture calculate the age and store that in a variable called age.
Log out this string: "You will be 40 years old in 2027". With 40 being the result of the age variable and 2027 being the yearFuture variable. (Hint use string concatenation)
Goodboy-Oldboy (A dog age calculator)
The same friend (who by the way loves dogs) asks how old his dog will be in 2045. Hmm you think, let's make this into a product as well! Dogs age can either be measured in dog years or in human years, this we want to take into consideration!
Like before, let's create three variables, but this time we call them dogYearOfBirth, dogYearFuture and dogYear. We add an extra variable called shouldShowResultInDogYears. If it is true we should show the result in dog years, if it is false we should show it in human years. What do we call this type of variable? Now dependent on shouldShowResultInDogYears log this string out: "Your dog will be 10 human years old in 2027" or "Your dog will be 70 dog years old in 2027"
Housey pricey (A house price estimator)
Two of your friends are considering buying a house, but cannot figure out what the right price should be. Your friends know the width, the height and the depth of the house and the garden size. Let's help them figure out if they paid too much:
We have made our own formula for calculating the price of a house. This formula is VERY simplified and not at all close to the real calculation which can get quite complicated:
housePrice = volumeInMeters * 2.5 * 1000 + gardenSizeInM2 * 300;Your friend Peter is considering a house that is 8m wide, 10m deep and 10m high. The garden size is 100m2. The house costs 2.500.000. Your friend Julia is considering a house that is 5m wide, 11m deep and 8m high. The garden size is 70m2. This house costs 1.000.000.
Figure out if Peter and Julia are paying too much or too little using Javascript and the formula specified above.
Ez Namey (Startup name generator) Optional
At a meetup you overhear a conversation between two developers. It went something like this: "I wish picking a startup name was easier! You need to be creative, funny and interesting, it's nearly impossible!" Another problem to solve, awesome!
Let's help people who struggle finding a startup name by creating some code!
Create two arrays called firstWords, secondWords. The arrays should have 10 elements containing strings of possible startup names. Some examples could be: "Easy", "Awesome", "Corporate".
Create a variable called startupName that will contain the created startup name.
Using a random index (you choose) of the arrays and concatenation of strings, create and log the new startup name and the number of characters in it. An example could be: "The startup: "Easy Corporation" contains 16 characters"
Hint: you can use this code to generate a random number from 0-9, if you don't want to specify the indexes yourself.
const randomNumber = Math.floor(Math.random() * 10);4 projects from one startup, that's incredible! Let's hope one or more of these projects actually becomes popular!
To be continued...
Last updated