How To Apply Form Validation In Node.
   Image by Gerd Altmann  from Pixabay          Open the console and create a new folder named  validations  by typing command mkdir followed by folder name.  Change to the new folder by typing command cd validations.              Now setup node project by typing npm init. This will auto generate a package.json  file in folder.             now add a add.js  file and then open the package.json  and in " scripts"  write "start":"app.js".  The package.json will look like this.            Now type npm install  followed by package name. We install the following packages: express ejs body-parser express-validator.          Now add a folder name views . And in it make a new file names register.ejs.        app.js     var  express                =  require ( 'express' );   var  bodyParser             =  require ( 'body-parser' );   var  path                   =  require ( 'path' )   var  {check,validationResult} =  require ( 'express-val...