Tutorial: JavaScript

This quickstart guide is for the JavaScript SDK. If you use Android, please refer to this article.

1. Create your own account and application on the [[console]]

2. If you use Node.JS, please refer to this article

3. Add the javascript library to your HTML page:

   <script type='text/javascript' src='[[siteUrl]]/libjs/latest/webcom.js'></script>

   Or install package via npm and reference [[service]] library in your web application

   npm install webcom

   
   

   <script type='text/javascript' src='YOUR_LIBRARY_PATH/webcom.js'></script>

   or else with import:

import 'webcom/webcom.js';

or else you could add in your 'webpack.config.js' :

module.exports = {
[...]
  resolve: {
        alias: {
                webcom: 'webcom/webcom.js'
        }
  }
};

and then just import 'webcom' will work well.

1. In javascript, create a Webcom reference to your [[service]] application:

   var myRef = new Webcom('<your-app>');

2. Listen to changes:

   myRef.on('child_added', function(snapShot){
    // If another users call ref.set({foo: 'bar'}) then snapShot.val() will be equal to 'bar'
    // If another users call ref.push({foo: 'bar'}) then snapShot.val() will be equal to {foo: 'bar'}
    console.info(snapShot.val());
   });

3. Write data to myRef:

   myRef.set({foo: 'bar'});

   or Create a new child data to myRef:

   var barRef = myRef.set({bar: 'baz'});