how to create a events calendar in office 365 calendar via nodejs using express

Set up an Office 365 account and obtain an API key for calendar access.
Install the required packages for your Node.js application using npm. Run the following command in your terminal:

npm install express request-promise

Create a new Express application using the following code:

const express = require('express');
const app = express();

Define a route for your calendar events using the following code:

app.get('/events', async (req, res) => {
  // Call the Office 365 API to get calendar events
  const events = await getCalendarEvents();

  // Return the events as a JSON response
  res.json(events);
});

Define the getCalendarEvents() function to make a request to the Office 365 API and retrieve the calendar events. You will need to include your API key and specify the calendar ID to retrieve events from. Here is an example function:

const request = require('request-promise');

async function getCalendarEvents() {
  const options = {
    uri: 'https://graph.microsoft.com/v1.0/me/calendars/{calendar-id}/events',
    headers: {
      Authorization: 'Bearer {your-access-token}'
    },
    json: true
  };

  try {
    const response = await request(options);
    return response.value;
  } catch(err) {
    console.error(err);
  }
}

Run your Node.js application using the following command:

node app.js

Test your calendar events route by visiting http://localhost:3000/events in your browser or using a tool like Postman. You should see a JSON response containing your calendar events.