Google Spreadsheet API Apps Script and JavaScript

AJAX from your web application to Google Apps Script Web App API to get data from Google Spreadsheet udemy

What you'll learn

How to apply JavaScript AJAX and JSON
Google Apps Script how to setup a web app

Explore how you can setup a simple application that can output your Spreadsheet content as JSON data to be used within your websites. Using Google Apps Script your can setup a web app URL that can receive GET and POST requests. The GET requests can be set to output spreadsheet object data as JSON.Additionally explore how you can send input data to your spreadsheet from your website. Using Google Apps Script POST web app, you can get data requests and add them to your Spreadsheet
You will be amazed at how easy it can be to setup this powerful application.
Source Code is included to get you started quickly