Build a To-Do List That Saves Data in Google Sheets Using HTML, CSS, and JavaScript Introduction Creating a simple To-Do list is often a beginner-friendly way to practice HTML, CSS, and JavaScript. But what if we take it a step further and store the tasks online in a way that persists even after refreshing the page or switching devices? Enter Google Sheets – a free, cloud-based spreadsheet tool that can act like a database with the help of Google Apps Script . In this tutorial, we'll build a To-Do list web app from scratch using HTML, CSS, and JavaScript, and then connect it to Google Sheets so that every task is saved, loaded, and managed from a spreadsheet. Let’s dive in! Why Google Sheets as a Database? Using Google Sheets as a backend has several benefits: It’s free and easy to use. No need for external hosting or server setup. Simple to read, write, and modify data. Can be connected with Google Apps Script to expose REST APIs. Perfect for s...