Receiving Notifications on Content Changes

To create engaging applications with various content features, you must learn to receive notifications when content items are added, updated, or removed:

1. Define the event handlers for different notifications using the ContentChangeCallback listener interface:

   var listener = 
   {
      /* When new items are added */
      oncontentadded: function(content) 
      {
         console.log(content.contentURI + " content was added");
      },
   
      /* When items are updated */
      oncontentupdated: function(content) 
      {
         console.log(content.contentURI + " content was updated");
      },
    
      /* When items are deleted */
      oncontentremoved: function(id) 
      {
         console.log(id + " was removed");
      }
   };
   

2. Register the listener to use the defined event handlers:

   webapis.content.setChangeListener(listener);
   

3. To stop the notifications, use the unsetChangeListener() method:

   webapis.content.unsetChangeListener();