There are five branches:

  [~/javascript/jquery/how-jquery-works-tutorial(master)]$ git branch 
    getallparams # shows the use of jQuery AJAX get method with all its params
    heroku       # shows how to deploy the app in Heroku
    getscript
  * master
    separated

• master shows how to use jQuery get on the client side and Sinatra on the server side

• getallparams shows how to use jQuery get exemplifying how to use all the get params.

  There is a version using express.js instead of Sinatra in this branch composed of these files:

            gulpfile.js                  
            app.js                       
            package.json
            views/index.ejs
            views/layout.ejs
            README.md                    
  

• getscript shows how to use jQuery get with dataType script

• separated shows how to put the views/templates in separated files

See

• Using layouts in EJS using express-ejs-layouts