class ElementBuildermethod

on()

Adds an event handler to all instances of the UI element.

on(
  eventName: string,
  handler: string | ViewBuilderEventHandler<TView, any>,
): this;

Notes

• Listens for events on all instances of the UI element, including events propagated from nested views.
• Multiple handlers can be added.
• String handlers emit a transformed event; the original is still emitted on the view but does not propagate to parents.
• Function handlers can return true or call event.stopPropagation() to stop propagation.

Parameters

• eventName — The name of the event to handle.
• handler — The function to call, or name of the transformed event to emit.

Return value

The builder instance for chaining.

Related

• class ElementBuilder abstractstatic
  An abstract base class for UI element builders.