Practice Functions in JavaScript

By @alesanchezr and other contributors at 4Geeks Academy

Before you start... some related tutorials:

1. JavaScript for Beginners
2. Looping with JavaScript
3. JavaScript Functions ← 🔥 You are here
4. Master JavaScript

Estas instrucciones están disponibles en 🇪🇸 español 🇪🇸

Learn the basics about functions in JavaScript:

1. Basic theory about functions in JavaScript.
2. Learn the syntax on how to create functions.
3. How to call functions.
4. What are function parameters and the return statement.
5. How to create traditional, arrow and anonymous functions.
6. Use functions in different scenarios, like for replacing vowels in a string.

These exercises are intended to be built by collaboration, we need you! If you find any bugs or misspells please contribute and report them.

One click installation (recommended):

You can open these exercises in just a few seconds by clicking: Open in Codespaces (recommended) or Open in Gitpod.

Once you have VSCode open, if exercises don't run automatically you can try typing on your terminal: $ learnpack start

Local Installation

Clone the repository in your local environment and follow the steps below:

1. Install LearnPack, the package manager for learning tutorials and the node compiler plugin for LearnPack, make sure you also have node.js 14+:

$ npm i learnpack -g
$ learnpack plugins:install learnpack-node

2. Download this particular exercise using LearnPack and cd into the folder:

$ learnpack download javascript-functions-exercises-tutorial
$ cd javascript-functions-exercises-tutorial

Note: Once you finish downloading, you will find an "exercises" folder that contains all the exercises within.

3. Start the tutorial/exercises by running the following command at the same level where your learn.json file is:

$ npm i jest@24.8.0 -g
$ learnpack start

How are the exercises organized?

Each exercise is a small React application containing the following files:

1. app.js: represents the entry file for the exercise.
2. README.md: contains exercise instructions.
3. test.js: you don't have to open this file, it contains the testing script for the exercise.

Note: The exercises have automatic grading, but it's very rigid and strict, my recommendation is to not take the tests too serious and use them only as a suggestion, or you may get frustrated.

Contributors

Thanks goes to these wonderful people (emoji key):

1. Alejandro Sanchez (alesanchezr), contribution: (coder) 💻 (idea) 🤔, (build-tests) ⚠️ , (pull-request-review) 👀 (build-tutorial) ✅ (documentation) 📖

2. Paolo (plucodev), contribution: (bug reports) 🐛, contribution: (coder), (translation) 🌎

3. Marco Gómez (marcogonzalo), contribution: (bug reports) :🐛, (translation) 🌎

This project follows the all-contributors specification. Contributions of any kind are welcome!

This and many other exercises are built by students as part of the 4Geeks Academy Coding Bootcamp by Alejandro Sánchez and many other contributors. Find out more about our Full Stack Developer Course, and Data Science Bootcamp.