Google Apps Script quickstart

Create a Google Apps Script that makes requests to the Google Tasks API.

Quickstarts explain how to set up and run an app that calls a Google Workspace API. This quickstart uses a simplified authentication approach that is appropriate for a testing environment. For a production environment, we recommend learning about authentication and authorization before choosing the access credentials that are appropriate for your app.

In Apps Script, Google Workspace quickstarts use Advanced Google services to call Google Workspace APIs and handle some details of the authentication and authorization flow.

Objectives

  • Configure the environment.
  • Create and configure the script.
  • Run the script.

Prerequisites

  • A Google account with Google Tasks enabled.

  • Access to Google Drive

Create the script

  1. Create a new script in the Apps Script editor by going to script.google.com/create.
  2. Replace the contents of the script editor with the following code:

tasks/quickstart/quickstart.gs
/**
 * Lists the user's tasks.
 * @see https://developers.google.com/tasks/reference/rest/v1/tasklists/list
 */
function listTaskLists() {
  const optionalArgs = {
    maxResults: 10
  };
  try {
    // Returns all the authenticated user's task lists.
    const response = Tasks.Tasklists.list(optionalArgs);
    const taskLists = response.items;
    // Print task list of user if available.
    if (!taskLists || taskLists.length === 0) {
      console.log('No task lists found.');
      return;
    }
    for (const taskList of taskLists) {
      console.log('%s (%s)', taskList.title, taskList.id);
    }
  } catch (err) {
    // TODO (developer) - Handle exception from Task API
    console.log('Failed with error %s', err.message);
  }
}

  1. Click Save .
  2. Click Untitled project, type Quickstart, and click Rename.

Configure the script

Enable the Google Tasks API

Open the Apps Script project.

  1. Click Editor .
  2. Next to Services, click Add a service .
  3. Select Tasks API and click Add.

Run the sample

In the Apps Script editor, click Run.

The first time you run the sample, it prompts you to authorize access:

  1. Click Review permissions.
  2. Choose an account.
  3. Click Allow.

The script's execution log appears at the bottom of the window.

Next steps