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Well it contains many completely defined node-js REST API's for different functionalityUpto now I have uploaded below functionalities in this repository and some amazing tutorials for important features of nodejs

1. Session expire using nodejs
2. Rest Api's for user sign-up, login, logout and user profile using node-js, expess, mongodb along with jwt token as an authentication agent
3. OTP verification here complete form is designed and when user filled and submit the form an otp will be sent to filled email of user using nodemailer module and smtp methodthen user has to enter the received otp for further verification
4. CRUD(Create, Read, Update, Delete) API's have been successfully created, here you can create any note and then you can find it by id, author name, title as well as all, you can edit it by id name and delete it also
5. To upload an image in nodejs using multer(local storage)
6. Implementing a payment gateway in node-js
7. Implementing web scrapping for static as well as dynamic content:
8. for static content, I have used axios(to get content) and cheerios for parsing HTML DOM
9. for dynamic content nightmare has been used, here flipkart search is also implemented where you can get data of any product

In this series I have also written the tutorial blogs-

• My first blog is about developing CRUD api's(My blog url )

• So this blog is about how to build RESTful User API's for login/sign-up and logout in node.js, express and mongodb using jwt-authentication(My blog url)

• This blog is about building a 2-wayauthentication in Node.js using otp verification using nodemailer package of npm.(My blog url)

My profile @sarthakmittal

For development, you will need Node.js and a node global package, Yarn, installed in your environement and many other packages also which are stated further

• Node installation on Windows

  Just go onofficial Node.js website and download the installer.Also, be sure to havegit available in your PATH,npm might need it (You can find githere).

• Node installation on Ubuntu

  You can install nodejs and npm easily with apt install, just run the following commands.

  $ sudo apt install nodejs$ sudo apt install npm

• Other Operating Systems

  You can find more information about the installation on theofficial Node.js website and theofficial NPM website.

If the installation was successful, you should be able to run the following command.

$ node --versionv8.11.3$ npm --version6.1.0

If you need to updatenpm, you can make it usingnpm! Cool right? After running the following command, just open again the command line and be happy.

$ npm install npm -g

After installing node, this project will need yarn too, so just run the following command.

  $ npm install -g yarn

clone the above repository by using

git clone "https://github.com/mostlypanda/Node-js-functionalities.git"

then

cd (name of the folder you want to go)

then to install all the dependencies required for proper functioning of the app

npm install

then finally

nodemon

(use only nodemon if index.js is main file otherwise)

nodemon app.js

Fork this repository by clicking on the fork button on the top of this page.This will create a copy of this repository in your account.

Now clone the forked repository to your machine. Go to your GitHub account, open the forked repository, click on the code button and then click thecopy to clipboard icon.

Open a terminal and run the following git command:

git clone [url you just copied]

where [url you just copied] is the url to this repository (your fork of this project). See the previous steps to obtain the url.

For example:

git clone https://github.com/parteek10/450DSA.git

Change to the repository directory on your computer (if you are not already there):

cd directory-name

Now create a branch using thegit checkout command:

git checkout -b your-new-branch-name

For example:

git checkout -b add-hritik

If the folder for that topic exist , add a new cpp file with file name as problem number. if the folder for that topic does not exist , create a new one and add the cpp file .For example :

for the problem reverse the array 3 : array->0.cpp

If you go to the project directory and execute the commandgit status, you'll see there are changes.

Add those changes to the branch you just created using the command:

git add .

Now commit those changes using thegit commit command:

git commit -m "Add your committing message here"

Push your changes using the commandgit push:

git push origin <add-your-branch-name>

replacing<add-your-branch-name> with the name of the branch you created earlier.

If you go to your repository on GitHub, you'll see aCompare & pull request button. Click on that button.

Now submit the pull request.