Google Spreadsheet Data API Apps Script Code JSON JavaScript

Posted on: 20th June 2026

Instructor: N/A • Language: N/A

Create a JSON API from Google Sheets using Apps Script and JavaScript for dynamic web applications.

Description

You have data in a Google Sheet, but getting it onto your website in a usable format is a different challenge. Instead of copying and pasting, this course teaches you how to create a dynamic, programmatic connection. You will learn to use Google Apps Script to output your sheet data as JSON, create an API endpoint that you can request with JavaScript, and build a fun, interactive project from scratch. This is a practical, hands-on approach to turning a simple spreadsheet into a powerful data source for your web applications.

This Course Offers

  • Turning a Google Sheet into a JSON API: Learn to output sheet data as an array in a web app endpoint using the doGet() method, and restructure your JSON object with properties derived dynamically from the sheet headers.
  • Using JavaScript Fetch to get and display data: Use JavaScript's Fetch API to retrieve the JSON data from your web app endpoint and output it in the console. Then, learn to output the JSON data to a webpage for a dynamic user experience.
  • Sending data back to the sheet (POST): Explore how to use the doPost() method in Apps Script to send data from your webpage back to the Google Sheet. You will use JavaScript Fetch and FormData methods to create an interactive page that can update your spreadsheet.
  • Troubleshooting and debugging common issues: Learn to use the Apps Script IDE and Logger to debug and troubleshoot your application, including common CORS issues, ensuring your connection is reliable and robust.

Why We Love This Course

  1. One student review noted they really loved the focus on core functionality and concepts, getting the app to work without having to comb through thousands of CSS styling videos.
  2. It is taught by a Google Developer Expert with many years of application development experience, ensuring you are learning best practices.
  3. The course provides source code and is project-based, helping you build your own version of the application and understand the underlying logic.
  4. It covers the entire workflow, from setting up the sheet and script to creating a dynamic, interactive web page that can both read from and write to your spreadsheet.

Google Sheets is a powerful, accessible data source, and this course unlocks its potential for web development. The question is whether you want to learn how to create a dynamic connection between your website and your Google Sheets data, or continue with static, manual data updates.

Course Eligibility

  • JavaScript Developers.
  • Application Developers.
  • Google Apps Script Coders.
  • Anyone who wants to learn Google Apps Script.
  • Anyone who wants to build a fun interactive project with JavaScript.

Course Requirements

  • JavaScript coding experience.
  • A Google account.
  • HTML and CSS coding experience.
  • Important: This course is not for absolute beginners.

Interested in exploring more lessons? Check out our full course library to continue building your skills and advancing your learning journey.

Price: Free

Google Spreadsheet Data API Apps Script Code JSON JavaScript | Jobdockets