Add Array Item Listener

[hugsbrugs]

Hi !

I would like to know how I can have a listener when a user clicks on "+Item" when adding Array (or Object) Item.

I can listen to : editor.watch('root.MY_ARRAY',function() but this listen indifferently to an existing Item modification or a new Item. And as I need to perform some specific actions on item creation, I would like to be able to differentiate them !

Thank for highlighting me !

[jdorn]

There's no built in way to listen to add events, but you can do something like this:

var previous_array_length = 0;

editor.on('change',function() {
  // Get your array value
  var arr = editor.getValue().MY_ARRAY;

  // If array has grown in size
  if(arr.length > previous_array_length) {
    // do something
  }

  // Update current array length
  previous_array_length = arr.length;
});