JavaScript Exercise | Learn JavaScript with Exercism | #0 Setup

Key Takeaways

welcome to a brand-new series of JavaScript exercises in this series of YouTube videos we'll go to a large number of exercises created to improve your knowledge of all the important things in JavaScript the series of videos is both for beginners and intermediate developers since we are going to start from really easy exercises and move on to much harder examples later on every single solution is going to be explained in detail so you can learn exactly how was something sold and why was it sold in that specific way so let's dive right in all the exercises will be from Exorcism data i/o and in this video we are going to set up everything so we can start coding in no time it's the landing page of exorcism you can come here by typing exorcisms at i/o in your browser but I'll also leave links down in in description you need to sign up so press sign up and sign up using github or type in all this information once you sign up I'll be there pause the video and do it now now once you're sign up you can see the list of all the languages here sure you're interested only in JavaScript for now so let's type JavaScript and go right into it now we can click join the JavaScript track and this depends on you you can either follow me along in my videos and see all the solutions or you can click mentor mode so you will still get a mentor mentor from Exorcism review your solutions before you can publish them but for me I'll go on independent mode here you'll see a list of all jobs through the exercises a total of 96 of them some are easy some are medium and some are hard difficulty of course we're going to start with easy ones so click easy and what's easier than a simple hello world now click begin walkthrough and we'll be welcome to Exorcism installation guide choose your operating system I'm currently on Mac will need to use terminal 2 installations but don't worry it is really easy click yes and now just copy and paste into the console which stands here for Mac it's this I'm not going to install Exorcism right now because I already have it installed but you can check if it's installed by typing Exorcism version to the console as you can see i'm running i'm currently running 3.0 point 9 if you get Exorcism version and then some number you should define and then you can press yes now you need to configure the CLI press configure the CLI and now you just need to copy and paste this into the console again and press yes finally everything is set up now you can press copy here on this hello world and paste it into the console it is going to be downloaded to the folder here and the next thing we are going to do is open that folder in your code editor I am using Visual Studio code but the process should be the same in any code editor so I currently have many exercises here because I already sold some but you should just have a hello world you will see that in every exercise you will get the folder with solution this file is just here as a placeholder but for every other exercise besides hello world you need to create this file by yourself and then there is a spec file this are the tests for the exercise so let's open this file and this side file side by side here they already solve the exercise for you so you can just see how this works and here are the tests what are we going to do for every single exercise is that exorcism is going to test the solution themselves so what we need to do here we are currently in our folder and we are going to move directory to hello world okay now that we are in hello world will write MPM install and BM I for short once you install all the dependencies required for the exercise we can wait afraid for a bit here you'll be able to run npm test which is going to run all the tests for you for a specific exercise and then you'll see if you sold it correctly okay so now I can write npm tests and in town in the console I'll cut explanation if I solve it correctly or not so this exercise has only one test and I passed it so for every exercise you don't need to export the function you're going to create here we are exporting a class helloworld with the constructor will delete everything that that stands here and will just return what should be but we'll write it ourselves so we can learn how the Exorcism takes in exercises so we'll export a class called hello world which is going to have a constructor with one method in it and here we can see how are our tests being made here we have a greeter and greeter is nothing more than a new instance of hello world class so our reader is going to have a method called hello so let's created this that Hello is equal to an arrow function returning hello world and that should be it for this exercise let's check it out we run NPM tests and hear everything past this is the form in which exorcism will test our exercises to complete your exercise you're going to want to submit it and you're going to submit it by typing exorcism submit so this these two keywords are going to be the same for submitting every single exercise exorcism submit and then the name of the file you need to keep in mind that you need to be in this folder in the folder you're working with to post this file you'll type exorcism submit HelloWorld is type enter then you'll be greeted by this message saying that you can view your solution on this link you come here and now this is going to look a bit different for those who choose chose individual and those who choose mentored mode here you can press publish to publish your solution and here you can see your code after we publish your solution you can click view publish solution and then here on community solutions you can see how other people solve the same task you can see there are many different ways of solving the same task finally you can go to tracks JavaScript and now it should be one over 96 as you can see I also sold some more and every single task is so we'll have a check mark here that's it for this video this was the most boring part of all the series we just had to go to some install installation stuff and stuff like that but don't worry the next videos are going to be much more interesting and you will learn much more about the language you're writing code with so the next we are going to do leap and we are going to go through all of these exercises you're going to learn so much in every single every single exercise will be explained solution will be explained and you will learn all the new topics that you need to know about javascript this is also really good for passing interviews to get a job so let's go to the next video [Music]