DEMO: An event is a block of code that has a specific task and must receive a signal to run.

We use an event handler to tell the program what signal to listen for and what event to run.

• Click Run to see the parts of an event.
• Follow the onstage directions to see what each line does.
• Click Submit and Next to answer the questions about functions.

To navigate the page using the TAB key, first press ESC to exit the code editor.