Live Query Example

livequery.js

// In order to use it:
// Create an app in back4app, create a class called Message with a column called text, activate web hosting + live query for this class
// Create a new folder and go to it
// Place curent code in a file called livequery.js
// run: npm install parse
// run: node ./livequery
// Then you can create, update and delete entries in dashboard and see the results in your console

var Parse = require('parse/node');

// Replace here your app id and your client key
Parse.initialize("Fsk0eOuypmOyQr7jhyl77QhzmtEdjMbJWFNTBZSz", "LQOhZDS5xHLa12kAutp7nIklXfisqdAhqpXHm2JQ");
// Replace here your https://customdomain.back4app.io
Parse.serverURL = 'https://livequery.back4app.io';

var Message = Parse.Object.extend('Message');
var query = new Parse.Query(Message);
var subscription = query.subscribe();

subscription.on('create', function (message) {
  console.log('Message created with text: ' + message.get('text'));
});

subscription.on('update', function (message) {
  console.log('Message updated with text: ' + message.get('text'));
});

subscription.on('delete', function (message) {
  console.log('Message deleted with text: ' + message.get('text'));
  subscription.unsubscribe(); // Just to exemplify the unsubscribe method, this code will unsubscrive and not receive notification anymore when an entry is deleted
});

console.log('Running');