once - Methods - Annotations API

Annotations API Methods


Just like on(), but causes the bound callback to only fire once before being removed. Handy for saying "the next time that X happens, do this only once".


itemsApp.assessApp().annotationsApp().once('texthighlight:add', function () {
  // onTextHighlight callback 


  • eventName string

    The name of the event that the callback will be bound to.

  • callback function

    The function that will be invoked when the specified event is triggered.

  • context object

    The context for which the callback should be invoked.

Return value

None (undefined).

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