(Node.js) List Events on a Specified Google Calendar

See more Google Calendar Examples

Demonstrates how to fetch the list of events on a particular Google Calendar. The calendar can be referenced by the calendar ID, or by the keyword "primary".

Install Chilkat for Node.js and Electron using npm at Chilkat npm packages for Node.js Chilkat npm packages for Electron on Windows, Linux, MacOS

var os = require('os');
if (os.platform() == 'win32') {  
  var chilkat = require('@chilkat/ck-node23-win64'); 
} else if (os.platform() == 'linux') {
    if (os.arch() == 'arm') {
        var chilkat = require('@chilkat/ck-node23-linux-arm');
    } else if (os.arch() == 'arm64') {
        var chilkat = require('@chilkat/ck-node23-linux-arm64');
    } else {
        var chilkat = require('@chilkat/ck-node23-linux-x64');
    }
} else if (os.platform() == 'darwin') {
  var chilkat = require('@chilkat/ck-node23-mac-universal');
}

function chilkatExample() {

    // This example requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    // This example uses a previously obtained access token having permission for the 
    // Google Calendar scope.

    // In this example, Get Google Calendar OAuth2 Access Token, the access
    // token was saved to a JSON file.  This example fetches the access token from the file..
    var jsonToken = new chilkat.JsonObject();
    var success = jsonToken.LoadFile("qa_data/tokens/googleCalendar.json");
    if (jsonToken.HasMember("access_token") == false) {
        console.log("No access token found.");
        return;
    }

    var http = new chilkat.Http();
    http.AuthToken = jsonToken.StringOf("access_token");

    // Let's get the primary calendar.  A calendar ID could have be used instead of "primary".
    http.SetUrlVar("calendarId","primary");
    var sbResponse = new chilkat.StringBuilder();
    success = http.QuickGetSb("https://www.googleapis.com/calendar/v3/calendars/{$calendarId}/events",sbResponse);
    if (success !== true) {
        console.log(http.LastErrorText);
        return;
    }

    if (http.LastStatus !== 200) {
        // Note: If a 401 unauthorized response is received, it likely means that the OAuth2 access token needs
        // to be refreshed or re-fetched.
        console.log("Error response status: " + http.LastStatus);
        console.log(sbResponse.GetAsString());
        return;
    }

    // A sample JSON response:
    // (Code for parsing the Google Calendar events is shown below.)

    // {
    //  "kind": "calendar#events",
    //  "etag": "\"p32cfpufit76da0g\"",
    //  "summary": "support@chilkatcloud.com",
    //  "updated": "2017-08-10T14:00:27.199Z",
    //  "timeZone": "America/Chicago",
    //  "accessRole": "owner",
    //  "defaultReminders": [
    //   {
    //    "method": "popup",
    //    "minutes": 10
    //   }
    //  ],
    //  "nextSyncToken": "CJj8-fLpzNUCEJj8-fLpzNUCGAU=",
    //  "items": [
    //   {
    //    "kind": "calendar#event",
    //    "etag": "\"3004746854620000\"",
    //    "id": "5jt9fopfg3rr9eftegiuq7gc5k",
    //    "status": "confirmed",
    //    "htmlLink": "https://www.google.com/calendar/event?eid=NWp0OWZvcGZnM3JyOWVmdGVnaXVxN2djNWsgc3VwcG9ydEBjaGlsa2F0Y2xvdWQuY29t",
    //    "created": "2017-08-10T13:57:07.000Z",
    //    "updated": "2017-08-10T13:57:07.310Z",
    //    "summary": "Run 10 miles",
    //    "creator": {
    //     "email": "support@chilkatcloud.com",
    //     "self": true
    //    },
    //    "organizer": {
    //     "email": "support@chilkatcloud.com",
    //     "self": true
    //    },
    //    "start": {
    //     "dateTime": "2017-08-10T12:00:00-05:00"
    //    },
    //    "end": {
    //     "dateTime": "2017-08-10T13:00:00-05:00"
    //    },
    //    "iCalUID": "5jt9fopfg3rr9eftegiuq7gc5k@google.com",
    //    "sequence": 0,
    //    "hangoutLink": "https://plus.google.com/hangouts/_/chilkatcloud.com/support?hceid=c3VwcG9ydEBjaGlsa2F0Y2xvdWQuY29t.5jt9fopfg3rr9eftegiuq7gc5k",
    //    "reminders": {
    //     "useDefault": true
    //    }
    //   },
    //   {
    //    "kind": "calendar#event",
    //    "etag": "\"3004746898118000\"",
    //    "id": "7dvh49vd219r3sq7jdueieu8rc",
    //    "status": "confirmed",
    //    "htmlLink": "https://www.google.com/calendar/event?eid=N2R2aDQ5dmQyMTlyM3NxN2pkdWVpZXU4cmMgc3VwcG9ydEBjaGlsa2F0Y2xvdWQuY29t",
    //    "created": "2017-08-10T13:57:29.000Z",
    //    "updated": "2017-08-10T13:57:29.059Z",
    //    "summary": "Eat Giordano's Pizza",
    //    "creator": {
    //     "email": "support@chilkatcloud.com",
    //     "self": true
    //    },
    //    "organizer": {
    //     "email": "support@chilkatcloud.com",
    //     "self": true
    //    },
    //    "start": {
    //     "dateTime": "2017-08-10T15:00:00-05:00"
    //    },
    //    "end": {
    //     "dateTime": "2017-08-10T16:00:00-05:00"
    //    },
    //    "iCalUID": "7dvh49vd219r3sq7jdueieu8rc@google.com",
    //    "sequence": 0,
    //    "hangoutLink": "https://plus.google.com/hangouts/_/chilkatcloud.com/support?hceid=c3VwcG9ydEBjaGlsa2F0Y2xvdWQuY29t.7dvh49vd219r3sq7jdueieu8rc",
    //    "reminders": {
    //     "useDefault": true
    //    }
    //   },
    //   {
    //    "kind": "calendar#event",
    //    "etag": "\"3004746915224000\"",
    //    "id": "5btd89ljn07bg3tlgpimcaqrro",
    //    "status": "confirmed",
    //    "htmlLink": "https://www.google.com/calendar/event?eid=NWJ0ZDg5bGpuMDdiZzN0bGdwaW1jYXFycm8gc3VwcG9ydEBjaGlsa2F0Y2xvdWQuY29t",
    //    "created": "2017-08-10T13:57:37.000Z",
    //    "updated": "2017-08-10T13:57:37.612Z",
    //    "summary": "Nap",
    //    "creator": {
    //     "email": "support@chilkatcloud.com",
    //     "self": true
    //    },
    //    "organizer": {
    //     "email": "support@chilkatcloud.com",
    //     "self": true
    //    },
    //    "start": {
    //     "dateTime": "2017-08-10T16:30:00-05:00"
    //    },
    //    "end": {
    //     "dateTime": "2017-08-10T17:30:00-05:00"
    //    },
    //    "iCalUID": "5btd89ljn07bg3tlgpimcaqrro@google.com",
    //    "sequence": 0,
    //    "hangoutLink": "https://plus.google.com/hangouts/_/chilkatcloud.com/support?hceid=c3VwcG9ydEBjaGlsa2F0Y2xvdWQuY29t.5btd89ljn07bg3tlgpimcaqrro",
    //    "reminders": {
    //     "useDefault": true
    //    }
    //   }
    //  ]
    // }
    // 

    var json = new chilkat.JsonObject();
    json.LoadSb(sbResponse);

    var numEvents = json.SizeOfArray("items");
    var i = 0;
    while (i < numEvents) {
        json.I = i;
        console.log(json.StringOf("items[i].summary"));
        console.log(json.StringOf("items[i].start.dateTime"));
        console.log(json.StringOf("items[i].end.dateTime"));
        console.log("--");
        i = i+1;
    }

    // Sample output:

    // Run 10 miles
    // 2017-08-10T12:00:00-05:00
    // 2017-08-10T13:00:00-05:00
    // --
    // Eat Giordano's Pizza
    // 2017-08-10T15:00:00-05:00
    // 2017-08-10T16:00:00-05:00
    // --
    // Nap
    // 2017-08-10T16:30:00-05:00
    // 2017-08-10T17:30:00-05:00
    // --
    // 

}

chilkatExample();