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These are a series of JavaScript exercises intended to be used alongside the curriculum at 'The Odin Project'. They start simple and easy but get more complex and involved as you progress through them.
# JavaScript Exercises
There will eventually be a suggested order of completion, but at this time since we are still in the process of creating more exercises the order is subject to change and has not yet been specified. However, there are a few exercises that make a good "starting point". Feel free to at least start with these:
These JavaScript exercises are intended to complement the JavaScript content on The Odin Project (TOP). They should only be done when instructed during the course of the curriculum.
1. Hello World
2. Repeat String
3. Reverse String
**Note:** The `generator-exercise` file is not actually an exercise; it is a script that generates exercises. It was created to help efficiently write these exercises.
## Contributing
If you have a suggestion to improve an exercise, an idea for a new exercise, or notice an issue with an exercise, please feel free to open an issue after thoroughly reading our [contributing guide](https://github.com/TheOdinProject/theodinproject/blob/main/CONTRIBUTING.md) in our main TOP repo.
## How To Use These Exercises
Before you start you should have a few things installed on your machine:
1. **NPM**. We should have installed NPM already in [this Installing Node.js lesson](https://www.theodinproject.com/paths/foundations/courses/foundations/lessons/installing-node-js). Just in case you need to check, type `npm --version` in your terminal. If you get back `Command 'npm' not found, but can be installed with:`, do NOT follow the instructions in the terminal to install with `apt-get`. (This causes permission issues.) Instead, go back to the installation lesson and install Node with NVM by following the instructions there.
2. **A copy of this repository**. Copies of repositories on your machine are called clones. If you need help cloning, you can learn how [here](https://docs.github.com/en/github/creating-cloning-and-archiving-repositories/cloning-a-repository).
2. **A fork and clone of this repository**. To learn how to fork a repository, see the GitHub documentation on how to [fork a repo](https://docs.github.com/en/get-started/quickstart/fork-a-repo).
- Copies of repositories on your machine are called clones. If you need help cloning to your local environment you can learn how from the GitHub documentation on [cloning a repository](https://docs.github.com/en/github/creating-cloning-and-archiving-repositories/cloning-a-repository-from-github/cloning-a-repository).
3. **Jest**. After cloning this repository to your local machine, go into the newly created directory (`cd javascript-exercises`) and run `npm install`. This will install Jest and set up the testing platform based on our preconfigured settings.
Each exercise includes 3 files: a markdown file with a description of the task, an empty (or mostly empty) JavaScript file, and a set of tests. To complete an exercise, you'll need to go to the exercise directory with `cd exerciseName` in the terminal and run `npm test exerciseName.spec.js`. This should run the test file and show you the output. When you first run a test, it will fail. This is by design! You must open the exercise file and write the code needed to get the test to pass. Some of the exercises have test conditions defined in their spec file that are defined as 'test.skip' compared to 'test'. This is purposeful. After you pass your first 'test', you will change the next 'test.skip' to an 'test' and test your code again. You'll do this until all conditions are satisfied. **ALL TESTS MUST PASS AT THE SAME TIME.**
Each exercise includes 3 files: a markdown file with a description of the task, an empty (or mostly empty) JavaScript file, and a set of tests. To complete an exercise, you'll need to go to the exercise directory with `cd exerciseName` in the terminal and run `npm test exerciseName.spec.js`. This should run the test file and show you the output. When you first run a test, it will fail. This is by design! You must open the exercise file and write the code needed to get the test to pass.
Some of the exercises have test conditions defined in their spec file that are defined as 'test.skip' compared to 'test'. This is purposeful. After you pass your first 'test', you will change the next 'test.skip' to 'test' and test your code again. You'll do this until all conditions are satisfied. **ALL TESTS MUST PASS AT THE SAME TIME.**
**Note**: Due to the way Jest handles failed tests, it may return an exit code of 1 if any tests fail. NPM will interpret this as an error and you may see some `npm ERR!` messages after Jest runs. You can ignore these, or run your test with `npm test exerciseName.spec.js --silent` to supress the errors.
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## Solutions
Solutions for these exercises can be found in this repo on the 'solutions' branch.
## A quick note!
The exercise `generator-exercise` is not actually an exercise; it is a script that generates exercises. It was created to help efficiently write these exercises.