let's next next talk about event mapping we refer to events as actions or occurrences that happen in your application event handlers are pieces of code that execute when triggered when we bind an event to an event handler this is known as an event mapping within ui builder we have four different types of events component events are just what they sound like these are events that are specific to a component examples include a button click or a row selected page events refer to things like page property changes and pages being ready data resource events encompass things like data fetch started and data fetch succeeded etc lastly declarative action events refer to the events triggered by declarative actions such as a list action or a button clicked in the action bar next slide please event handlers are similar to event listeners in javascript these are the code blocks that execute when a corresponding event is triggered in terms of the different types of event handlers with three different categories application level page level and data resource event handlers page builders can leverage event handlers to open modals navigate to new locations refresh data and so much more i've added a link to a sharepoint site where we will be hosting short videos showing the different event handlers and how they work