I added backend to the Angela-yu's Keeper app in The Complete Web Developement bootcamp 2021
Follow this steps :- 1)Open FrontEnd Folder in vscode. 2)Open Terminal and type npm i or npm install 3)then type npm i axios 4)Open BackEnd Folder in vscode. 5)Open terminal and type npm init -y 6)then type npm i express mongoose cors nodemone 7)then type nodemon app.js 8)Goto FrontEnd and type npm start to start react app 9)Test App by adding and deleting notes