Add contributing guide file

MaoShizhong · MaoShizhong · commit 58df2c049560 · 2025-01-29T14:58:19.000Z
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+# The Odin Project JavaScript Exercises Contributing Guide
+
+Thank you for expressing interest in contributing to The Odin Project (TOP) JavaScript exercises! Before continuing through this guide, be sure you've read our [general contributing guide](https://github.com/TheOdinProject/.github/blob/main/CONTRIBUTING.md), as it contains information that is important for all of our repos.
+
+This contributing guide assumes you have followed the instructions in our general contributing guide to fork and clone our JavaScript exercises repo.
+
+## Table of Contents
+
+- [How to Contribute](#how-to-contribute)
+  - [Prerequisites](#prerequisites)
+  - [Adding New Exercises](#adding-new-exercises)
+
+## How to Contribute
+
+### Prerequisites
+
+- Node v18.0.0 or higher
+- npm v8.5.5 or higher
+
+### Adding New Exercises
+
+If a maintainer has approved a new exercise to be added, the new exercise(s) must follow the same format as existing exercises.
+
+To generate a new exercise template, do the following:
+
+1. Be sure to run `npm install` at the root of the `javascript-exercises` directory to install the necessary dependencies.
+2. Run the command `npm run generate`.
+3. When prompted, enter the name of the new exercise in "camelCase" syntax.
+
+After entering an exercise name, a new directory with the necessary files will be created. You will then need to update the `README.md` and `spec.js` files as well as the files in the `solution` directory of the new exercise.
