jQuery provides simple methods for attaching event handlers to selections.
When an event occurs, the provided function is executed. Inside the function,
this refers to the element that was clicked.
For details on jQuery events, visit http://api.jquery.com/category/events/.
The event handling function can receive an event object. This
object can be used to determine the nature of the event, and to
prevent the event's default behavior.
For details on the event object, visit http://api.jquery.com/category/events/event-object/.