once - Methods - Assess API

Assess API Methods


Set up a one time event listener. Will fire once and then stop listening.


// Sets up a one-time event listener (callback) for the 'focused' event.
assessApp.once("focused", function () {
    console.log("The assessment is in focus.");


  • event_name string

    Name of the event that you want to listen to.

  • event_callback function

    Callback function that will be invoked once, when the event is triggered.

  • context object

    Execution context that will be used for this when the callback function is invoked.

Return value

None (undefined).

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