NotePad MERN

A simple note-taking application that perform CRUD actions and it is developed by MERN stack.

The following frameworks are used to build this application.

MongoDB
Express
React@16.8
Node
Redux

React@16.8

Introducing useState, it is a hook that allow us to have a state variable in functional component. But it allows us to only declare one state variable at a time.

When declaring a state, we can write for eg.

import React, { useState } from 'react';

const [isOn, setOn] = useState(0);

console.log(ísOn); // 0

Redux

Redux as a state management and the directory structure as below:

├── src
│   ├── store.js // create a store for the state of components
│   ├── actions
│   │   ├── noteActions.js  // user perform CRUD actions on the Note component
│   │   └── types.js
│   ├── reducers
│   │   ├── noteReducer.js // return the updated state to the Note component
│   │   └── rootReducer.js

Installation

Install mongoDB and node.

The following steps are required to install packages for both client and server:

1. Install the packages for the server.

npm install

2. Install the packages for the client.

npm client-install

Usage

Run the NotePad

# the react app will run on port 3000
npm run dev

It will redirect you to http://localhost:3000/

Writing a note in the textfield and hit the add button! The note will then be saved in the notepad-app db.

Testing

A script is configured named test for running Jest.

npm run test