There are some steps to Run a Express.js Servers:
- first Create a Folder as You like
- Then craete a app.js file you can take your fav instead of "app" .js
- then open cmd and cd to that Folder
- then type cmd "npm init"
- then type cmd "npm install express"
- then type cmd "npm install -g nodemon"
- then type cmd "nodemon app.js"