Web-browser (Chrome, Firefox, etc.) push input format

Api key for app is a GCM/FCM server key (required for Chrome push and for other browsers which use GCM, e.g. Opera).

Example transform template:

    "operation": "shift",
    "spec": {
      "url": "data.url",
      "*": "&"
    "operation": "default",
    "spec": {
      "icon": "icon.png",
      "data": { "url": "http://push.delivery" },
      "requireInteraction": "true"

This template transforms "url":"link" to "data":{url:"link"} (as required for notification options), writes all other key-value pairs as is and adds default elements to resulting json.

The API for showing a notification in browser (javascript):

<ServiceWorkerRegistration>.showNotification(<title>, <options>);

Title and options could be declared and used as following:

const notificationTitle = 'Title';
const notificationOptions = {
    "title":"eThinking Push Demo",
    "body": "Body text line 1 \n Body text line 2",
    "data": { "url": "http://push.delivery" },
self.registration.showNotification(notificationTitle, notificationOptions);

Thus if the above described template and demo service worker (see source code) are used, then the outgoing json should contain following options:

The list of common notification options:

* title - notification's title
* body - notification's body text
* icon - url to icon image
* image - url to body image
* url - url will opened in a new window by click on the notification
* requireInteraction - if true, then the notification will not disappear until user action
* badge - small monochrome icon
* actions - array of actions / buttons (see example 2)

Other options:

* timestamp
* sound
* vibrate
* dir
* tag
* renotify
* silent

Example push message 1 ( title, icon, body and image ):

    "title":"eThinking Push Demo",
    "body":"Good morning!",

notification view in Chrome:


"Image" and "Require interaction" options work only in Chrome at the moment (tested on Google Chrome 60, Firefox 55, Opera 47). An "Image" option requires "https" url.

Example push message 2 ( title, icon, body and buttons ):

    "title":"Demo title",
    "actions": [
       {"action": "like", "title": "Like", "icon": "https://example/like.png"},
       {"action": "reply", "title": "Reply", "icon": "https://example/reply.png"}

notification view in Chrome:


Actions should be handled in service worker:

self.addEventListener('notificationclick', function (event) {
    let clickResponsePromise = Promise.resolve();
    if (event.action === 'like') {
    else if (event.action === 'reply') {

Javascript API


This API documentation covers usage of the Javascript library to receive push notifications

To use this library you need to have a project setup by ethinking. Please get in contact if you don’t have access to the Admin UI of the push library.

Setup of library

To initiate the library you need to do the following

<script src="<libraryLink>"></script> (1)
1 Library link provided with customer onboarding.
Example Initiation
let push = new ethinkingPush(
messageSenderId, (1)
projectName, (2)
serviceWorkerPath (3)
1 Firebase messengerId, retrieved from the firebase console
2 Project Name, provided by us beforehand
3 Path to your service worker, can be anything but needs .js ending: firebase_service_worker.js



Initializes the push for a certain app. For the browser push Firefox and Chrome use the same app. All infos are coming from the Admin UI

Example Init
  appId: '123', (1)
  user: 'api-test-123', (2)
  password: '12345657890' (3)

To get any of the information, go to your Admin UI, open an App

1 String - AppId
2 String - AppUser
3 String - AppPassword


Gets tags from the push backend, depending on the status of the user it returns subscribed and all Tags

getTags() returns a promise, the objects represents all tags from your app and subscribed apps depending on the subscription status of the user
Example getTags
push.getTags().then(result => {
  // TODO show tags here in a list

The format of the promise will be an Array with the following structure:

Example Array for all Tags
      id: 111,
      name: 'Test Tag',
      subscribed: false
      id: 111,
      name: 'Test Tag',
      subscribed: false


Register several or a single tag to the current DeviceId

The parameter tags can be a number or an Array
Example register single Tag
Example register several Tags
push.registerTags([123, 456]);


Unregister several or a single tag to the current DeviceId

The parameter tags can be a number or an Array
Example unregister single Tag
Example unregister several Tags
push.unregisterTags([123, 456]);


Subscribes the user and gets a deviceId necessary to update Tags. Requests the permission if none is given, gets deviceToken and stores it in localStorage

The parameter tags can be a number or an Array
Example several Tags
push.subscribe([123, 456]);


Unsubscribes the user and removes the deviceId

Example unsubscribe User
After the Unsubscription, the user needs to subscribe() again


Check the browser notification permission, returns <boolean>



Requests the permission to send notifications without subscribing the user. Can be necessary when permission has been manually revoked.

Returns <boolean> and sets deviceId for the user