how to create web app with google apps script
IN SUMMARY
Google Apps Script allows you to create web applications that can interact with Google services like Sheets, Docs, and more. You can create a user interface with HTML, CSS, and JavaScript, and use Apps Script to handle the backend logic and data manipulation.
Setting up the Project
In your Google Drive, right-click and select 'More' > 'Google Apps Script'. This will create a new project where you can write your code and create your web app.
In your Apps Script project, create a new HTML file by going to 'File' > 'New' > 'HTML file'. This file will contain the user interface for your web app, written in HTML, CSS, and JavaScript.
In the Code.gs file, you'll write the backend logic for your web app using Google Apps Script. This code will handle data manipulation, integration with Google services, and any other necessary functionality.
Building the User Interface
Use HTML tags to create the layout and structure of your web app's user interface. This can include elements like buttons, input fields, and containers for displaying data.
Use CSS to style the appearance of your web app's user interface. You can control things like colors, fonts, and layout using CSS rules within the HTML file or in a separate CSS file.
Use JavaScript to add interactivity and event handling to your web app's user interface. You can capture user input, handle button clicks, and update the UI based on user actions or data changes.
Connecting the Frontend and Backend
In your HTML file's JavaScript code, you can use the google.script.run function to call functions defined in your Apps Script code. This allows you to pass data from the user interface to the backend logic and vice versa.
Capture user input from form fields or button clicks in your JavaScript code, and use the google.script.run function to pass that data to your Apps Script code for processing or storage.
In your Apps Script code, you can manipulate data or retrieve data from Google services like Sheets or Docs. Use the return value of your Apps Script functions to pass that data back to your JavaScript code and update the user interface accordingly.
Deploying and Publishing
In your Apps Script project, go to 'Publish' > 'Deploy as web app'. This will generate a URL that you can use to access your web app from a browser.
When deploying your web app, you can choose who should have access to it. Options include 'Anyone, even anonymous' for public access, or specific Google accounts or groups for restricted access.
As you make changes to your web app, you'll need to re-deploy it with a new version number to ensure users see the latest updates. You can also provide version descriptions to track changes.